994657931 has 16 divisors (see below), whose sum is σ = 1060473600. Its totient is φ = 930877728.

The previous prime is 994657901. The next prime is 994657933. The reversal of 994657931 is 139756499.

It is a happy number.

994657931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 994657931 - 2²² = 990463627 is a prime.

It is a super-2 number, since 2×994657931² = 1978688799402401522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994657933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306425 + ... + 309653.

It is an arithmetic number, because the mean of its divisors is an integer number (66279600).

Almost surely, 2^994657931 is an apocalyptic number.

994657931 is a deficient number, since it is larger than the sum of its proper divisors (65815669).

994657931 is a wasteful number, since it uses less digits than its factorization.

994657931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538.

The product of its digits is 1837080, while the sum is 53.

The square root of 994657931 is about 31538.1979669099. The cubic root of 994657931 is about 998.2161300335.

The spelling of 994657931 in words is "nine hundred ninety-four million, six hundred fifty-seven thousand, nine hundred thirty-one".