947997156 has 48 divisors (see below), whose sum is σ = 2244650240. Its totient is φ = 311351040.

The previous prime is 947997109. The next prime is 947997181. The reversal of 947997156 is 651799749.

It is a junction number, because it is equal to n+sod(n) for n = 947997096 and 947997105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716976 + ... + 718296.

Almost surely, 2^947997156 is an apocalyptic number.

It is an amenable number.

947997156 is an abundant number, since it is smaller than the sum of its proper divisors (1296653084).

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

947997156 is a wasteful number, since it uses less digits than its factorization.

947997156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164 (or 2162 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 57.

The square root of 947997156 is about 30789.5624522337. The cubic root of 947997156 is about 982.3562475099.

The spelling of 947997156 in words is "nine hundred forty-seven million, nine hundred ninety-seven thousand, one hundred fifty-six".