139261004 has 24 divisors (see below), whose sum is σ = 253619520. Its totient is φ = 66853584.

The previous prime is 139260983. The next prime is 139261009. The reversal of 139261004 is 400162931.

It is not an unprimeable number, because it can be changed into a prime (139261009) 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, 3287 + ... + 17009.

It is an arithmetic number, because the mean of its divisors is an integer number (10567480).

Almost surely, 2^139261004 is an apocalyptic number.

It is an amenable number.

139261004 is a deficient number, since it is larger than the sum of its proper divisors (114358516).

139261004 is a wasteful number, since it uses less digits than its factorization.

139261004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13829 (or 13827 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 139261004 is about 11800.8899664390. The cubic root of 139261004 is about 518.3341711599.

The spelling of 139261004 in words is "one hundred thirty-nine million, two hundred sixty-one thousand, four".