924391961 has 4 divisors (see below), whose sum is σ = 924717924. Its totient is φ = 924066000.

The previous prime is 924391903. The next prime is 924391967. The reversal of 924391961 is 169193429.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 429774361 + 494617600 = 20731^2 + 22240^2 .

It is a cyclic number.

It is not a de Polignac number, because 924391961 - 2²² = 920197657 is a prime.

It is a super-2 number, since 2×924391961² = 1709000995122851042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (924391967) 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, 158690 + ... + 164411.

It is an arithmetic number, because the mean of its divisors is an integer number (231179481).

Almost surely, 2^924391961 is an apocalyptic number.

It is an amenable number.

924391961 is a deficient number, since it is larger than the sum of its proper divisors (325963).

924391961 is a wasteful number, since it uses less digits than its factorization.

924391961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325962.

The product of its digits is 104976, while the sum is 44.

The square root of 924391961 is about 30403.8149086591. The cubic root of 924391961 is about 974.1340410207.

The spelling of 924391961 in words is "nine hundred twenty-four million, three hundred ninety-one thousand, nine hundred sixty-one".