139144622 has 4 divisors (see below), whose sum is σ = 208716936. Its totient is φ = 69572310.

The previous prime is 139144613. The next prime is 139144627. The reversal of 139144622 is 226441931.

139144622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×139144622² = 38722451663045768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139144627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34786154 + ... + 34786157.

It is an arithmetic number, because the mean of its divisors is an integer number (52179234).

Almost surely, 2^139144622 is an apocalyptic number.

139144622 is a deficient number, since it is larger than the sum of its proper divisors (69572314).

139144622 is an equidigital number, since it uses as much as digits as its factorization.

139144622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69572313.

The product of its digits is 10368, while the sum is 32.

The square root of 139144622 is about 11795.9578669983. The cubic root of 139144622 is about 518.1897383365.

The spelling of 139144622 in words is "one hundred thirty-nine million, one hundred forty-four thousand, six hundred twenty-two".