39872086 has 4 divisors (see below), whose sum is σ = 59808132. Its totient is φ = 19936042.

The previous prime is 39872083. The next prime is 39872093. The reversal of 39872086 is 68027893.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39872081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9968020 + ... + 9968023.

It is an arithmetic number, because the mean of its divisors is an integer number (14952033).

Almost surely, 2^39872086 is an apocalyptic number.

39872086 is a deficient number, since it is larger than the sum of its proper divisors (19936046).

39872086 is a wasteful number, since it uses less digits than its factorization.

39872086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19936045.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 39872086 is about 6314.4347332125. The cubic root of 39872086 is about 341.6302502796.

The spelling of 39872086 in words is "thirty-nine million, eight hundred seventy-two thousand, eighty-six".