139958317 has 4 divisors (see below), whose sum is σ = 139988736. Its totient is φ = 139927900.

The previous prime is 139958267. The next prime is 139958341. The reversal of 139958317 is 713859931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139958317 - 2¹¹ = 139956269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139958347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6733 + ... + 18034.

It is an arithmetic number, because the mean of its divisors is an integer number (34997184).

Almost surely, 2^139958317 is an apocalyptic number.

It is an amenable number.

139958317 is a deficient number, since it is larger than the sum of its proper divisors (30419).

139958317 is an equidigital number, since it uses as much as digits as its factorization.

139958317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30418.

The product of its digits is 204120, while the sum is 46.

The square root of 139958317 is about 11830.3980068297. The cubic root of 139958317 is about 519.1978720385.

The spelling of 139958317 in words is "one hundred thirty-nine million, nine hundred fifty-eight thousand, three hundred seventeen".