139804472 has 8 divisors (see below), whose sum is σ = 262133400. Its totient is φ = 69902232.

The previous prime is 139804459. The next prime is 139804477. The reversal of 139804472 is 274408931.

139804472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139804477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8737772 + ... + 8737787.

It is an arithmetic number, because the mean of its divisors is an integer number (32766675).

Almost surely, 2^139804472 is an apocalyptic number.

It is an amenable number.

139804472 is a deficient number, since it is larger than the sum of its proper divisors (122328928).

139804472 is a wasteful number, since it uses less digits than its factorization.

139804472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17475565 (or 17475561 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 139804472 is about 11823.8941131930. The cubic root of 139804472 is about 519.0075647067.

The spelling of 139804472 in words is "one hundred thirty-nine million, eight hundred four thousand, four hundred seventy-two".