139448313 has 6 divisors (see below), whose sum is σ = 201425354. Its totient is φ = 92965536.

The previous prime is 139448299. The next prime is 139448317. The reversal of 139448313 is 313844931.

It can be written as a sum of positive squares in only one way, i.e., 138015504 + 1432809 = 11748^2 + 1197^2 .

It is not a de Polignac number, because 139448313 - 2⁶ = 139448249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139448317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7747120 + ... + 7747137.

Almost surely, 2^139448313 is an apocalyptic number.

It is an amenable number.

139448313 is a deficient number, since it is larger than the sum of its proper divisors (61977041).

139448313 is a wasteful number, since it uses less digits than its factorization.

139448313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15494263 (or 15494260 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 139448313 is about 11808.8235231119. The cubic root of 139448313 is about 518.5664571941.

The spelling of 139448313 in words is "one hundred thirty-nine million, four hundred forty-eight thousand, three hundred thirteen".