139897922 has 8 divisors (see below), whose sum is σ = 209898000. Its totient is φ = 69931924.

The previous prime is 139897889. The next prime is 139897957. The reversal of 139897922 is 229798931.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8729 + ... + 18867.

It is an arithmetic number, because the mean of its divisors is an integer number (26237250).

Almost surely, 2^139897922 is an apocalyptic number.

139897922 is a deficient number, since it is larger than the sum of its proper divisors (70000078).

139897922 is a wasteful number, since it uses less digits than its factorization.

139897922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17040.

The product of its digits is 489888, while the sum is 50.

The square root of 139897922 is about 11827.8451968226. The cubic root of 139897922 is about 519.1231796405.

The spelling of 139897922 in words is "one hundred thirty-nine million, eight hundred ninety-seven thousand, nine hundred twenty-two".