139644201 has 8 divisors (see below), whose sum is σ = 194287680. Its totient is φ = 89048432.

The previous prime is 139644187. The next prime is 139644203. The reversal of 139644201 is 102446931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139644201 - 2¹³ = 139636009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139644203) 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, 1011846 + ... + 1011983.

It is an arithmetic number, because the mean of its divisors is an integer number (24285960).

Almost surely, 2^139644201 is an apocalyptic number.

It is an amenable number.

139644201 is a deficient number, since it is larger than the sum of its proper divisors (54643479).

139644201 is a wasteful number, since it uses less digits than its factorization.

139644201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023855.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 139644201 is about 11817.1147493794. The cubic root of 139644201 is about 518.8091598277.

The spelling of 139644201 in words is "one hundred thirty-nine million, six hundred forty-four thousand, two hundred one".