974385891 has 24 divisors (see below), whose sum is σ = 1461711680. Its totient is φ = 624997296.

The previous prime is 974385883. The next prime is 974385901. The reversal of 974385891 is 198583479.

It is not a de Polignac number, because 974385891 - 2³ = 974385883 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974385091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7140 + ... + 44718.

Almost surely, 2^974385891 is an apocalyptic number.

974385891 is a deficient number, since it is larger than the sum of its proper divisors (487325789).

974385891 is a wasteful number, since it uses less digits than its factorization.

974385891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37695 (or 37692 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 974385891 is about 31215.1548290250. The cubic root of 974385891 is about 991.3880102051.

The spelling of 974385891 in words is "nine hundred seventy-four million, three hundred eighty-five thousand, eight hundred ninety-one".