86420439 has 20 divisors (see below), whose sum is σ = 147540624. Its totient is φ = 49382784.

The previous prime is 86420429. The next prime is 86420449. The reversal of 86420439 is 93402468.

It is a happy number.

86420439 is a `hidden beast` number, since 8 + 642 + 0 + 4 + 3 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (86420429) and next prime (86420449).

It is not a de Polignac number, because 86420439 - 2⁴ = 86420423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86420429) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75642 + ... + 76775.

Almost surely, 2^86420439 is an apocalyptic number.

86420439 is a deficient number, since it is larger than the sum of its proper divisors (61120185).

86420439 is a wasteful number, since it uses less digits than its factorization.

86420439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152436 (or 152427 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 86420439 is about 9296.2594090311. The cubic root of 86420439 is about 442.1186372364.

The spelling of 86420439 in words is "eighty-six million, four hundred twenty thousand, four hundred thirty-nine".