86994473 has 2 divisors, whose sum is σ = 86994474. Its totient is φ = 86994472.

The previous prime is 86994451. The next prime is 86994527. The reversal of 86994473 is 37449968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47706649 + 39287824 = 6907^2 + 6268^2 .

It is a cyclic number.

It is not a de Polignac number, because 86994473 - 2²² = 82800169 is a prime.

It is not a weakly prime, because it can be changed into another prime (86994433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43497236 + 43497237.

It is an arithmetic number, because the mean of its divisors is an integer number (43497237).

Almost surely, 2^86994473 is an apocalyptic number.

It is an amenable number.

86994473 is a deficient number, since it is larger than the sum of its proper divisors (1).

86994473 is an equidigital number, since it uses as much as digits as its factorization.

86994473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 86994473 is about 9327.0827700841. The cubic root of 86994473 is about 443.0953786756.

The spelling of 86994473 in words is "eighty-six million, nine hundred ninety-four thousand, four hundred seventy-three".