139856222 has 8 divisors (see below), whose sum is σ = 228855672. Its totient is φ = 63571000.

The previous prime is 139856209. The next prime is 139856237. The reversal of 139856222 is 222658931.

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

It is a super-2 number, since 2×139856222² = 39119525664226568, which contains 22 as substring.

It is a congruent number.

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, 3178529 + ... + 3178572.

It is an arithmetic number, because the mean of its divisors is an integer number (28606959).

Almost surely, 2^139856222 is an apocalyptic number.

139856222 is a deficient number, since it is larger than the sum of its proper divisors (88999450).

139856222 is a wasteful number, since it uses less digits than its factorization.

139856222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357114.

The product of its digits is 51840, while the sum is 38.

The square root of 139856222 is about 11826.0822760541. The cubic root of 139856222 is about 519.0715953913.

The spelling of 139856222 in words is "one hundred thirty-nine million, eight hundred fifty-six thousand, two hundred twenty-two".