139477722 has 16 divisors (see below), whose sum is σ = 279951552. Its totient is φ = 46326560.

The previous prime is 139477703. The next prime is 139477747. The reversal of 139477722 is 227774931.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39678 + ... + 43049.

It is an arithmetic number, because the mean of its divisors is an integer number (17496972).

Almost surely, 2^139477722 is an apocalyptic number.

139477722 is an abundant number, since it is smaller than the sum of its proper divisors (140473830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139477722 is a wasteful number, since it uses less digits than its factorization.

139477722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83013.

The product of its digits is 148176, while the sum is 42.

The square root of 139477722 is about 11810.0686704185. The cubic root of 139477722 is about 518.6029090489.

The spelling of 139477722 in words is "one hundred thirty-nine million, four hundred seventy-seven thousand, seven hundred twenty-two".