139239343 has 4 divisors (see below), whose sum is σ = 140803920. Its totient is φ = 137674768.

The previous prime is 139239337. The next prime is 139239349. The reversal of 139239343 is 343932931.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (139239337) and next prime (139239349).

It is a cyclic number.

It is not a de Polignac number, because 139239343 - 2⁵ = 139239311 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 (139239349) 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, 782155 + ... + 782332.

It is an arithmetic number, because the mean of its divisors is an integer number (35200980).

Almost surely, 2^139239343 is an apocalyptic number.

139239343 is a deficient number, since it is larger than the sum of its proper divisors (1564577).

139239343 is an equidigital number, since it uses as much as digits as its factorization.

139239343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564576.

The product of its digits is 52488, while the sum is 37.

The square root of 139239343 is about 11799.9721609841. The cubic root of 139239343 is about 518.3072954413.

The spelling of 139239343 in words is "one hundred thirty-nine million, two hundred thirty-nine thousand, three hundred forty-three".