139224608 has 12 divisors (see below), whose sum is σ = 274098510. Its totient is φ = 69612288.

The previous prime is 139224607. The next prime is 139224649. The reversal of 139224608 is 806422931.

It can be written as a sum of positive squares in only one way, i.e., 136702864 + 2521744 = 11692^2 + 1588^2 .

It is not an unprimeable number, because it can be changed into a prime (139224607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2175353 + ... + 2175416.

Almost surely, 2^139224608 is an apocalyptic number.

It is an amenable number.

139224608 is a deficient number, since it is larger than the sum of its proper divisors (134873902).

139224608 is an equidigital number, since it uses as much as digits as its factorization.

139224608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350779 (or 4350771 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 139224608 is about 11799.3477785851. The cubic root of 139224608 is about 518.2890115108.

The spelling of 139224608 in words is "one hundred thirty-nine million, two hundred twenty-four thousand, six hundred eight".