86372973 has 10 divisors (see below), whose sum is σ = 129026414. Its totient is φ = 57581928.

The previous prime is 86372969. The next prime is 86372977. The reversal of 86372973 is 37927368.

It is a happy number.

86372973 is a `hidden beast` number, since 8 + 637 + 2 + 9 + 7 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (86372969) and next prime (86372977).

It can be written as a sum of positive squares in only one way, i.e., 58936329 + 27436644 = 7677^2 + 5238^2 .

It is not a de Polignac number, because 86372973 - 2² = 86372969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86372977) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 533086 + ... + 533247.

Almost surely, 2^86372973 is an apocalyptic number.

It is an amenable number.

86372973 is a deficient number, since it is larger than the sum of its proper divisors (42653441).

86372973 is a wasteful number, since it uses less digits than its factorization.

86372973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066345 (or 1066336 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 86372973 is about 9293.7060960631. The cubic root of 86372973 is about 442.0376785854.

The spelling of 86372973 in words is "eighty-six million, three hundred seventy-two thousand, nine hundred seventy-three".