921942824 has 16 divisors (see below), whose sum is σ = 1885792320. Its totient is φ = 419064880.

The previous prime is 921942823. The next prime is 921942839. The reversal of 921942824 is 428249129.

It is a super-3 number, since 3×921942824³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (921942823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5238224 + ... + 5238399.

It is an arithmetic number, because the mean of its divisors is an integer number (117862020).

Almost surely, 2^921942824 is an apocalyptic number.

It is an amenable number.

921942824 is an abundant number, since it is smaller than the sum of its proper divisors (963849496).

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

921942824 is a wasteful number, since it uses less digits than its factorization.

921942824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10476640 (or 10476636 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 921942824 is about 30363.5113911418. The cubic root of 921942824 is about 973.2729712780.

The spelling of 921942824 in words is "nine hundred twenty-one million, nine hundred forty-two thousand, eight hundred twenty-four".