9120949887 has 32 divisors (see below), whose sum is σ = 14247498240. Its totient is φ = 5082739200.

The previous prime is 9120949813. The next prime is 9120949907. The reversal of 9120949887 is 7889490219.

It is not a de Polignac number, because 9120949887 - 2¹¹ = 9120947839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9120949987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103012 + ... + 169862.

It is an arithmetic number, because the mean of its divisors is an integer number (445234320).

Almost surely, 2^9120949887 is an apocalyptic number.

9120949887 is a deficient number, since it is larger than the sum of its proper divisors (5126548353).

9120949887 is a wasteful number, since it uses less digits than its factorization.

9120949887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67023.

The product of its (nonzero) digits is 2612736, while the sum is 57.

The square root of 9120949887 is about 95503.6642595456. The cubic root of 9120949887 is about 2089.3603872146.

The spelling of 9120949887 in words is "nine billion, one hundred twenty million, nine hundred forty-nine thousand, eight hundred eighty-seven".