86436931 has 12 divisors (see below), whose sum is σ = 100761408. Its totient is φ = 73932432.

The previous prime is 86436929. The next prime is 86436937. The reversal of 86436931 is 13963468.

It is not a de Polignac number, because 86436931 - 2¹ = 86436929 is a prime.

It is a super-2 number, since 2×86436931² = 14942686081397522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86436937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25710 + ... + 28876.

It is an arithmetic number, because the mean of its divisors is an integer number (8396784).

Almost surely, 2^86436931 is an apocalyptic number.

86436931 is a deficient number, since it is larger than the sum of its proper divisors (14324477).

86436931 is a wasteful number, since it uses less digits than its factorization.

86436931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738 (or 3731 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 86436931 is about 9297.1463901565. The cubic root of 86436931 is about 442.1467592751.

The spelling of 86436931 in words is "eighty-six million, four hundred thirty-six thousand, nine hundred thirty-one".