139161804 has 12 divisors (see below), whose sum is σ = 324710904. Its totient is φ = 46387264.

The previous prime is 139161769. The next prime is 139161823. The reversal of 139161804 is 408161931.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5798397 + ... + 5798420.

It is an arithmetic number, because the mean of its divisors is an integer number (27059242).

Almost surely, 2^139161804 is an apocalyptic number.

It is an amenable number.

139161804 is an abundant number, since it is smaller than the sum of its proper divisors (185549100).

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

139161804 is a wasteful number, since it uses less digits than its factorization.

139161804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11596824 (or 11596822 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 139161804 is about 11796.6861448459. The cubic root of 139161804 is about 518.2110666722.

The spelling of 139161804 in words is "one hundred thirty-nine million, one hundred sixty-one thousand, eight hundred four".