921710412 has 72 divisors (see below), whose sum is σ = 2687682816. Its totient is φ = 260877024.

The previous prime is 921710399. The next prime is 921710429. The reversal of 921710412 is 214017129.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9873 + ... + 44055.

It is an arithmetic number, because the mean of its divisors is an integer number (37328928).

Almost surely, 2^921710412 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 921710412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343841408).

921710412 is an abundant number, since it is smaller than the sum of its proper divisors (1765972404).

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

921710412 is a wasteful number, since it uses less digits than its factorization.

921710412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34307 (or 34302 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 921710412 is about 30359.6839904502. The cubic root of 921710412 is about 973.1911804764.

The spelling of 921710412 in words is "nine hundred twenty-one million, seven hundred ten thousand, four hundred twelve".