921214476 has 288 divisors, whose sum is σ = 3037052928. Its totient is φ = 228925440.

The previous prime is 921214471. The next prime is 921214477. The reversal of 921214476 is 674412129.

It is a happy number.

921214476 is a `hidden beast` number, since 92 + 121 + 447 + 6 = 666.

921214476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×921214476² = 1697272221583909152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 921214476.

It is not an unprimeable number, because it can be changed into a prime (921214471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4773036 + ... + 4773228.

Almost surely, 2^921214476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921214476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518526464).

921214476 is an abundant number, since it is smaller than the sum of its proper divisors (2115838452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921214476 is a wasteful number, since it uses less digits than its factorization.

921214476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 296 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 921214476 is about 30351.5152175307. The cubic root of 921214476 is about 973.0166039050.

The spelling of 921214476 in words is "nine hundred twenty-one million, two hundred fourteen thousand, four hundred seventy-six".