86043973 has 2 divisors, whose sum is σ = 86043974. Its totient is φ = 86043972.

The previous prime is 86043967. The next prime is 86044001. The reversal of 86043973 is 37934068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46881409 + 39162564 = 6847^2 + 6258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86043973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86043173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43021986 + 43021987.

It is an arithmetic number, because the mean of its divisors is an integer number (43021987).

Almost surely, 2^86043973 is an apocalyptic number.

It is an amenable number.

86043973 is a deficient number, since it is larger than the sum of its proper divisors (1).

86043973 is an equidigital number, since it uses as much as digits as its factorization.

86043973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 86043973 is about 9275.9890577771. The cubic root of 86043973 is about 441.4757148365.

The spelling of 86043973 in words is "eighty-six million, forty-three thousand, nine hundred seventy-three".