86393489 has 16 divisors (see below), whose sum is σ = 107025408. Its totient is φ = 67908672.

The previous prime is 86393477. The next prime is 86393501. The reversal of 86393489 is 98439368.

86393489 = 421² + 422² + ... + 693².

It is an interprime number because it is at equal distance from previous prime (86393477) and next prime (86393501).

It is a de Polignac number, because none of the positive numbers 2^k-86393489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86393189) 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, 11264 + ... + 17310.

It is an arithmetic number, because the mean of its divisors is an integer number (6689088).

Almost surely, 2^86393489 is an apocalyptic number.

It is an amenable number.

86393489 is a deficient number, since it is larger than the sum of its proper divisors (20631919).

86393489 is a wasteful number, since it uses less digits than its factorization.

86393489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224.

The product of its digits is 1119744, while the sum is 50.

The square root of 86393489 is about 9294.8097882636. The cubic root of 86393489 is about 442.0726745907.

The spelling of 86393489 in words is "eighty-six million, three hundred ninety-three thousand, four hundred eighty-nine".