86862431 has 2 divisors, whose sum is σ = 86862432. Its totient is φ = 86862430.

The previous prime is 86862379. The next prime is 86862449. The reversal of 86862431 is 13426868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86862431 - 2¹⁸ = 86600287 is a prime.

It is a super-2 number, since 2×86862431² = 15090163838459522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86862331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43431215 + 43431216.

It is an arithmetic number, because the mean of its divisors is an integer number (43431216).

Almost surely, 2^86862431 is an apocalyptic number.

86862431 is a deficient number, since it is larger than the sum of its proper divisors (1).

86862431 is an equidigital number, since it uses as much as digits as its factorization.

86862431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 86862431 is about 9320.0016630900. The cubic root of 86862431 is about 442.8710853992.

The spelling of 86862431 in words is "eighty-six million, eight hundred sixty-two thousand, four hundred thirty-one".