139109072 has 10 divisors (see below), whose sum is σ = 269523858. Its totient is φ = 69554528.

The previous prime is 139109071. The next prime is 139109077. The reversal of 139109072 is 270901931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 81288256 + 57820816 = 9016^2 + 7604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139109071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4347143 + ... + 4347174.

Almost surely, 2^139109072 is an apocalyptic number.

It is an amenable number.

139109072 is a deficient number, since it is larger than the sum of its proper divisors (130414786).

139109072 is an equidigital number, since it uses as much as digits as its factorization.

139109072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694325 (or 8694319 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 139109072 is about 11794.4508986218. The cubic root of 139109072 is about 518.1456038860.

The spelling of 139109072 in words is "one hundred thirty-nine million, one hundred nine thousand, seventy-two".