139000288621 has 4 divisors (see below), whose sum is σ = 139039086592. Its totient is φ = 138961490652.

The previous prime is 139000288579. The next prime is 139000288633. The reversal of 139000288621 is 126882000931.

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 139000288621 - 2³⁵ = 104640550253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139000280621) 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, 19393611 + ... + 19400776.

It is an arithmetic number, because the mean of its divisors is an integer number (34759771648).

Almost surely, 2^139000288621 is an apocalyptic number.

It is an amenable number.

139000288621 is a deficient number, since it is larger than the sum of its proper divisors (38797971).

139000288621 is an equidigital number, since it uses as much as digits as its factorization.

139000288621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38797970.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 139000288621 in words is "one hundred thirty-nine billion, two hundred eighty-eight thousand, six hundred twenty-one".