139072222 has 8 divisors (see below), whose sum is σ = 208782576. Its totient is φ = 69478032.

The previous prime is 139072207. The next prime is 139072249. The reversal of 139072222 is 222270931.

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

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, 25983 + ... + 30874.

It is an arithmetic number, because the mean of its divisors is an integer number (26097822).

Almost surely, 2^139072222 is an apocalyptic number.

139072222 is a deficient number, since it is larger than the sum of its proper divisors (69710354).

139072222 is a wasteful number, since it uses less digits than its factorization.

139072222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58082.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 139072222 is about 11792.8886198420. Note that the first 3 decimals coincide. The cubic root of 139072222 is about 518.0998475802.

It can be divided in two parts, 13907 and 2222, that added together give a square (16129 = 127²).

The spelling of 139072222 in words is "one hundred thirty-nine million, seventy-two thousand, two hundred twenty-two".