9877172942 has 96 divisors (see below), whose sum is σ = 19236268800. Its totient is φ = 3766210560.

The previous prime is 9877172917. The next prime is 9877172989. The reversal of 9877172942 is 2492717789.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17732528 + ... + 17733084.

It is an arithmetic number, because the mean of its divisors is an integer number (200377800).

Almost surely, 2^9877172942 is an apocalyptic number.

9877172942 is a deficient number, since it is larger than the sum of its proper divisors (9359095858).

9877172942 is a wasteful number, since it uses less digits than its factorization.

9877172942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1059 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 56.

The square root of 9877172942 is about 99383.9672281198. The cubic root of 9877172942 is about 2145.5775647972.

The spelling of 9877172942 in words is "nine billion, eight hundred seventy-seven million, one hundred seventy-two thousand, nine hundred forty-two".