87889895 has 16 divisors (see below), whose sum is σ = 106738560. Its totient is φ = 69471264.

The previous prime is 87889889. The next prime is 87889927. The reversal of 87889895 is 59898878.

It is a cyclic number.

It is not a de Polignac number, because 87889895 - 2²⁰ = 86841319 is a prime.

It is a super-2 number, since 2×87889895² = 15449267286222050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 253112 + ... + 253458.

It is an arithmetic number, because the mean of its divisors is an integer number (6671160).

Almost surely, 2^87889895 is an apocalyptic number.

87889895 is a deficient number, since it is larger than the sum of its proper divisors (18848665).

87889895 is a wasteful number, since it uses less digits than its factorization.

87889895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its digits is 11612160, while the sum is 62.

The square root of 87889895 is about 9374.9610665858. The cubic root of 87889895 is about 444.6104321093.

The spelling of 87889895 in words is "eighty-seven million, eight hundred eighty-nine thousand, eight hundred ninety-five".