921440050 has 12 divisors (see below), whose sum is σ = 1713878586. Its totient is φ = 368576000.

The previous prime is 921440041. The next prime is 921440057. The reversal of 921440050 is 50044129.

It can be written as a sum of positive squares in 3 ways, for example, as 507195441 + 414244609 = 22521^2 + 20353^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 921439997 and 921440024.

It is not an unprimeable number, because it can be changed into a prime (921440057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9214351 + ... + 9214450.

Almost surely, 2^921440050 is an apocalyptic number.

921440050 is a deficient number, since it is larger than the sum of its proper divisors (792438536).

921440050 is a wasteful number, since it uses less digits than its factorization.

921440050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18428813 (or 18428808 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 921440050 is about 30355.2310154280. The cubic root of 921440050 is about 973.0960169482.

Adding to 921440050 its reverse (50044129), we get a palindrome (971484179).

The spelling of 921440050 in words is "nine hundred twenty-one million, four hundred forty thousand, fifty".