139882566 has 16 divisors (see below), whose sum is σ = 280401984. Its totient is φ = 46521384.

The previous prime is 139882559. The next prime is 139882591. The reversal of 139882566 is 665288931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 23656 + ... + 28971.

It is an arithmetic number, because the mean of its divisors is an integer number (17525124).

Almost surely, 2^139882566 is an apocalyptic number.

139882566 is an abundant number, since it is smaller than the sum of its proper divisors (140519418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139882566 is a wasteful number, since it uses less digits than its factorization.

139882566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53075.

The product of its digits is 622080, while the sum is 48.

The square root of 139882566 is about 11827.1960328727. The cubic root of 139882566 is about 519.1041849642.

The spelling of 139882566 in words is "one hundred thirty-nine million, eight hundred eighty-two thousand, five hundred sixty-six".