139104001 has 4 divisors (see below), whose sum is σ = 139140400. Its totient is φ = 139067604.

The previous prime is 139103983. The next prime is 139104061. The reversal of 139104001 is 100401931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139104001 - 2²³ = 130715393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139104001.

It is not an unprimeable number, because it can be changed into a prime (139104061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11691 + ... + 20368.

It is an arithmetic number, because the mean of its divisors is an integer number (34785100).

Almost surely, 2^139104001 is an apocalyptic number.

It is an amenable number.

139104001 is a deficient number, since it is larger than the sum of its proper divisors (36399).

139104001 is an equidigital number, since it uses as much as digits as its factorization.

139104001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36398.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 139104001 is about 11794.2359226870. The cubic root of 139104001 is about 518.1393077515.

Adding to 139104001 its reverse (100401931), we get a palindrome (239505932).

The spelling of 139104001 in words is "one hundred thirty-nine million, one hundred four thousand, one".