86931443 has 2 divisors, whose sum is σ = 86931444. Its totient is φ = 86931442.

The previous prime is 86931437. The next prime is 86931499. The reversal of 86931443 is 34413968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86931443 - 2¹⁰ = 86930419 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86931397 and 86931406.

It is not a weakly prime, because it can be changed into another prime (86931433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43465721 + 43465722.

It is an arithmetic number, because the mean of its divisors is an integer number (43465722).

Almost surely, 2^86931443 is an apocalyptic number.

86931443 is a deficient number, since it is larger than the sum of its proper divisors (1).

86931443 is an equidigital number, since it uses as much as digits as its factorization.

86931443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 86931443 is about 9323.7032878572. The cubic root of 86931443 is about 442.9883410350.

The spelling of 86931443 in words is "eighty-six million, nine hundred thirty-one thousand, four hundred forty-three".