94987881 has 6 divisors (see below), whose sum is σ = 137204730. Its totient is φ = 63325248.

The previous prime is 94987877. The next prime is 94987883. The reversal of 94987881 is 18878949.

94987881 is a `hidden beast` number, since 9 + 498 + 78 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49829481 + 45158400 = 7059^2 + 6720^2 .

It is not a de Polignac number, because 94987881 - 2² = 94987877 is a prime.

It is a super-2 number, since 2×94987881² = 18045395073740322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (94987883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5277096 + ... + 5277113.

It is an arithmetic number, because the mean of its divisors is an integer number (22867455).

Almost surely, 2^94987881 is an apocalyptic number.

It is an amenable number.

94987881 is a deficient number, since it is larger than the sum of its proper divisors (42216849).

94987881 is a wasteful number, since it uses less digits than its factorization.

94987881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554215 (or 10554212 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 94987881 is about 9746.1726333982. The cubic root of 94987881 is about 456.2708599708.

The spelling of 94987881 in words is "ninety-four million, nine hundred eighty-seven thousand, eight hundred eighty-one".