139243319 has 4 divisors (see below), whose sum is σ = 139338696. Its totient is φ = 139147944.

The previous prime is 139243309. The next prime is 139243327. The reversal of 139243319 is 913342931.

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

It is a cyclic number.

It is not a de Polignac number, because 139243319 - 2⁸ = 139243063 is a prime.

It is a super-2 number, since 2×139243319² = 38777403772271522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139243309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45464 + ... + 48429.

It is an arithmetic number, because the mean of its divisors is an integer number (34834674).

Almost surely, 2^139243319 is an apocalyptic number.

139243319 is a deficient number, since it is larger than the sum of its proper divisors (95377).

139243319 is an equidigital number, since it uses as much as digits as its factorization.

139243319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95376.

The product of its digits is 17496, while the sum is 35.

The square root of 139243319 is about 11800.1406347552. The cubic root of 139243319 is about 518.3122288415.

The spelling of 139243319 in words is "one hundred thirty-nine million, two hundred forty-three thousand, three hundred nineteen".