86641039 has 4 divisors (see below), whose sum is σ = 86726920. Its totient is φ = 86555160.

The previous prime is 86641033. The next prime is 86641057. The reversal of 86641039 is 93014668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86641039 - 2²¹ = 84543887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86640989 and 86641007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86641033) 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, 41409 + ... + 43450.

It is an arithmetic number, because the mean of its divisors is an integer number (21681730).

Almost surely, 2^86641039 is an apocalyptic number.

86641039 is a deficient number, since it is larger than the sum of its proper divisors (85881).

86641039 is a wasteful number, since it uses less digits than its factorization.

86641039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85880.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 86641039 is about 9308.1168342474. The cubic root of 86641039 is about 442.4945070445.

It can be divided in two parts, 866 and 41039, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 86641039 in words is "eighty-six million, six hundred forty-one thousand, thirty-nine".