139440104 has 8 divisors (see below), whose sum is σ = 261450210. Its totient is φ = 69720048.

The previous prime is 139440097. The next prime is 139440109. The reversal of 139440104 is 401044931.

139440104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 132204004 + 7236100 = 11498^2 + 2690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (139440109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8714999 + ... + 8715014.

Almost surely, 2^139440104 is an apocalyptic number.

It is an amenable number.

139440104 is a deficient number, since it is larger than the sum of its proper divisors (122010106).

139440104 is a wasteful number, since it uses less digits than its factorization.

139440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17430019 (or 17430015 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 139440104 is about 11808.4759389178. The cubic root of 139440104 is about 518.5562813913.

The spelling of 139440104 in words is "one hundred thirty-nine million, four hundred forty thousand, one hundred four".