86401959 has 32 divisors (see below), whose sum is σ = 134701056. Its totient is φ = 48246240.

The previous prime is 86401951. The next prime is 86401963. The reversal of 86401959 is 95910468.

It is not a de Polignac number, because 86401959 - 2³ = 86401951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86401959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86401951) 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, 248824 + ... + 249170.

It is an arithmetic number, because the mean of its divisors is an integer number (4209408).

Almost surely, 2^86401959 is an apocalyptic number.

86401959 is a deficient number, since it is larger than the sum of its proper divisors (48299097).

86401959 is a wasteful number, since it uses less digits than its factorization.

86401959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 86401959 is about 9295.2654077224. The cubic root of 86401959 is about 442.0871210235.

The spelling of 86401959 in words is "eighty-six million, four hundred one thousand, nine hundred fifty-nine".