86985913 has 4 divisors (see below), whose sum is σ = 99412480. Its totient is φ = 74559348.

The previous prime is 86985911. The next prime is 86985917. The reversal of 86985913 is 31958968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86985913 - 2¹ = 86985911 is a prime.

It is a super-3 number, since 3×86985913³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86985911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6213273 + ... + 6213286.

It is an arithmetic number, because the mean of its divisors is an integer number (24853120).

Almost surely, 2^86985913 is an apocalyptic number.

It is an amenable number.

86985913 is a deficient number, since it is larger than the sum of its proper divisors (12426567).

86985913 is a wasteful number, since it uses less digits than its factorization.

86985913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12426566.

The product of its digits is 466560, while the sum is 49.

The square root of 86985913 is about 9326.6238800543. The cubic root of 86985913 is about 443.0808451053.

The spelling of 86985913 in words is "eighty-six million, nine hundred eighty-five thousand, nine hundred thirteen".