86997959 has 12 divisors (see below), whose sum is σ = 93816744. Its totient is φ = 80640384.

The previous prime is 86997949. The next prime is 86997961. The reversal of 86997959 is 95979968.

It is not a de Polignac number, because 86997959 - 2⁴ = 86997943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86997949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17117 + ... + 21609.

It is an arithmetic number, because the mean of its divisors is an integer number (7818062).

Almost surely, 2^86997959 is an apocalyptic number.

86997959 is a deficient number, since it is larger than the sum of its proper divisors (6818785).

86997959 is a wasteful number, since it uses less digits than its factorization.

86997959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594 (or 4577 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 62.

The square root of 86997959 is about 9327.2696433629. The cubic root of 86997959 is about 443.1012970970.

Subtracting 86997959 from its reverse (95979968), we obtain a square (8982009 = 2997²).

The spelling of 86997959 in words is "eighty-six million, nine hundred ninety-seven thousand, nine hundred fifty-nine".