139399104 has 56 divisors (see below), whose sum is σ = 397205200. Its totient is φ = 42891264.

The previous prime is 139399097. The next prime is 139399109. The reversal of 139399104 is 401993931.

139399104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139399104² = 38864220392005632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139399109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25429 + ... + 30420.

It is an arithmetic number, because the mean of its divisors is an integer number (7092950).

Almost surely, 2^139399104 is an apocalyptic number.

It is an amenable number.

139399104 is an abundant number, since it is smaller than the sum of its proper divisors (257806096).

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

139399104 is a wasteful number, since it uses less digits than its factorization.

139399104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55877 (or 55867 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 139399104 is about 11806.7397701482. The cubic root of 139399104 is about 518.5054521797.

The spelling of 139399104 in words is "one hundred thirty-nine million, three hundred ninety-nine thousand, one hundred four".