86881943 has 2 divisors, whose sum is σ = 86881944. Its totient is φ = 86881942.

The previous prime is 86881939. The next prime is 86881979. The reversal of 86881943 is 34918868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86881943 - 2² = 86881939 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86881903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43440971 + 43440972.

It is an arithmetic number, because the mean of its divisors is an integer number (43440972).

Almost surely, 2^86881943 is an apocalyptic number.

86881943 is a deficient number, since it is larger than the sum of its proper divisors (1).

86881943 is an equidigital number, since it uses as much as digits as its factorization.

86881943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 47.

The square root of 86881943 is about 9321.0483852408. The cubic root of 86881943 is about 442.9042437837.

The spelling of 86881943 in words is "eighty-six million, eight hundred eighty-one thousand, nine hundred forty-three".