86289987 has 16 divisors (see below), whose sum is σ = 131830272. Its totient is φ = 49180800.

The previous prime is 86289967. The next prime is 86290013. The reversal of 86289987 is 78998268.

It is not a de Polignac number, because 86289987 - 2¹⁰ = 86288963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86289937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3298 + ... + 13544.

It is an arithmetic number, because the mean of its divisors is an integer number (8239392).

Almost surely, 2^86289987 is an apocalyptic number.

86289987 is a deficient number, since it is larger than the sum of its proper divisors (45540285).

86289987 is a wasteful number, since it uses less digits than its factorization.

86289987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10658.

The product of its digits is 3483648, while the sum is 57.

The square root of 86289987 is about 9289.2403887508. The cubic root of 86289987 is about 441.8960652544.

The spelling of 86289987 in words is "eighty-six million, two hundred eighty-nine thousand, nine hundred eighty-seven".