86400591 has 8 divisors (see below), whose sum is σ = 116220720. Its totient is φ = 57090432.

The previous prime is 86400533. The next prime is 86400679. The reversal of 86400591 is 19500468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86400591 - 2⁶ = 86400527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86400091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127096 + ... + 127773.

It is an arithmetic number, because the mean of its divisors is an integer number (14527590).

Almost surely, 2^86400591 is an apocalyptic number.

86400591 is a deficient number, since it is larger than the sum of its proper divisors (29820129).

86400591 is a wasteful number, since it uses less digits than its factorization.

86400591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254985.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 86400591 is about 9295.1918215817. The cubic root of 86400591 is about 442.0847878265.

The spelling of 86400591 in words is "eighty-six million, four hundred thousand, five hundred ninety-one".