86734431 has 12 divisors (see below), whose sum is σ = 143180752. Its totient is φ = 49562496.

The previous prime is 86734429. The next prime is 86734433. The reversal of 86734431 is 13443768.

It is an interprime number because it is at equal distance from previous prime (86734429) and next prime (86734433).

It is not a de Polignac number, because 86734431 - 2¹ = 86734429 is a prime.

It is a super-2 number, since 2×86734431² = 15045723041787522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86734433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 688306 + ... + 688431.

Almost surely, 2^86734431 is an apocalyptic number.

86734431 is a deficient number, since it is larger than the sum of its proper divisors (56446321).

86734431 is a wasteful number, since it uses less digits than its factorization.

86734431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376750 (or 1376747 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 86734431 is about 9313.1321798845. The cubic root of 86734431 is about 442.6534409934.

The spelling of 86734431 in words is "eighty-six million, seven hundred thirty-four thousand, four hundred thirty-one".