86672439 has 24 divisors (see below), whose sum is σ = 143649792. Its totient is φ = 49329360.

The previous prime is 86672419. The next prime is 86672447. The reversal of 86672439 is 93427668.

It is not a de Polignac number, because 86672439 - 2¹⁶ = 86606903 is a prime.

It is a super-2 number, since 2×86672439² = 15024223364417442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86672394 and 86672403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86672419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13954 + ... + 19184.

It is an arithmetic number, because the mean of its divisors is an integer number (5985408).

Almost surely, 2^86672439 is an apocalyptic number.

86672439 is a deficient number, since it is larger than the sum of its proper divisors (56977353).

86672439 is a wasteful number, since it uses less digits than its factorization.

86672439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507 (or 5504 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 86672439 is about 9309.8033813824. The cubic root of 86672439 is about 442.5479561163.

The spelling of 86672439 in words is "eighty-six million, six hundred seventy-two thousand, four hundred thirty-nine".