139638414 has 16 divisors (see below), whose sum is σ = 279476352. Its totient is φ = 46512888.

The previous prime is 139638413. The next prime is 139638449. The reversal of 139638414 is 414836931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139638413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1717 + ... + 16799.

It is an arithmetic number, because the mean of its divisors is an integer number (17467272).

Almost surely, 2^139638414 is an apocalyptic number.

139638414 is an abundant number, since it is smaller than the sum of its proper divisors (139837938).

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

139638414 is a wasteful number, since it uses less digits than its factorization.

139638414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16631.

The product of its digits is 62208, while the sum is 39.

The square root of 139638414 is about 11816.8698901190. The cubic root of 139638414 is about 518.8019930661.

The spelling of 139638414 in words is "one hundred thirty-nine million, six hundred thirty-eight thousand, four hundred fourteen".