139418299049 has 8 divisors (see below), whose sum is σ = 141435222312. Its totient is φ = 137404270080.

The previous prime is 139418299039. The next prime is 139418299067. The reversal of 139418299049 is 940992814931.

It can be written as a sum of positive squares in 4 ways, for example, as 54460623424 + 84957675625 = 233368^2 + 291475^2 .

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 139418299049 - 2⁸ = 139418298793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139418299039) 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, 626444 + ... + 819309.

It is an arithmetic number, because the mean of its divisors is an integer number (17679402789).

Almost surely, 2^139418299049 is an apocalyptic number.

It is an amenable number.

139418299049 is a deficient number, since it is larger than the sum of its proper divisors (2016923263).

139418299049 is a wasteful number, since it uses less digits than its factorization.

139418299049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447147.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 139418299049 in words is "one hundred thirty-nine billion, four hundred eighteen million, two hundred ninety-nine thousand, forty-nine".