139549395922 has 8 divisors (see below), whose sum is σ = 209640773772. Its totient is φ = 69669138000.

The previous prime is 139549395919. The next prime is 139549396001. The reversal of 139549395922 is 229593945931.

It can be written as a sum of positive squares in 2 ways, for example, as 102226633441 + 37322762481 = 319729^2 + 193191^2 .

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

It is a super-2 number, since 2×139549395922² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52778329 + ... + 52780972.

Almost surely, 2^139549395922 is an apocalyptic number.

139549395922 is a deficient number, since it is larger than the sum of its proper divisors (70091377850).

139549395922 is a wasteful number, since it uses less digits than its factorization.

139549395922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105559964.

The product of its digits is 23619600, while the sum is 61.

The spelling of 139549395922 in words is "one hundred thirty-nine billion, five hundred forty-nine million, three hundred ninety-five thousand, nine hundred twenty-two".