139908922 has 4 divisors (see below), whose sum is σ = 209863386. Its totient is φ = 69954460.

The previous prime is 139908919. The next prime is 139908941. The reversal of 139908922 is 229809931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95433361 + 44475561 = 9769^2 + 6669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34977229 + ... + 34977232.

Almost surely, 2^139908922 is an apocalyptic number.

139908922 is a deficient number, since it is larger than the sum of its proper divisors (69954464).

139908922 is an equidigital number, since it uses as much as digits as its factorization.

139908922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69954463.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 139908922 is about 11828.3101920773. The cubic root of 139908922 is about 519.1367852877.

The spelling of 139908922 in words is "one hundred thirty-nine million, nine hundred eight thousand, nine hundred twenty-two".