86889937 has 2 divisors, whose sum is σ = 86889938. Its totient is φ = 86889936.

The previous prime is 86889893. The next prime is 86889973. The reversal of 86889937 is 73998868.

Together with next prime (86889973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65351056 + 21538881 = 8084^2 + 4641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86889937 is a prime.

It is a super-2 number, since 2×86889937² = 15099722303727938, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86889137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43444968 + 43444969.

It is an arithmetic number, because the mean of its divisors is an integer number (43444969).

Almost surely, 2^86889937 is an apocalyptic number.

It is an amenable number.

86889937 is a deficient number, since it is larger than the sum of its proper divisors (1).

86889937 is an equidigital number, since it uses as much as digits as its factorization.

86889937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 58.

The square root of 86889937 is about 9321.4771898021. The cubic root of 86889937 is about 442.9178272274.

The spelling of 86889937 in words is "eighty-six million, eight hundred eighty-nine thousand, nine hundred thirty-seven".