39986386 has 12 divisors (see below), whose sum is σ = 65928366. Its totient is φ = 18175520.

The previous prime is 39986383. The next prime is 39986413. The reversal of 39986386 is 68368993.

It can be written as a sum of positive squares in only one way, i.e., 33860761 + 6125625 = 5819^2 + 2475^2 .

It is a super-2 number, since 2×39986386² = 3197822130681992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39986383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82375 + ... + 82858.

Almost surely, 2^39986386 is an apocalyptic number.

39986386 is a deficient number, since it is larger than the sum of its proper divisors (25941980).

39986386 is a wasteful number, since it uses less digits than its factorization.

39986386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165257 (or 165246 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The square root of 39986386 is about 6323.4789475415. The cubic root of 39986386 is about 341.9563855785.

The spelling of 39986386 in words is "thirty-nine million, nine hundred eighty-six thousand, three hundred eighty-six".