344502139 has 2 divisors, whose sum is σ = 344502140. Its totient is φ = 344502138.

The previous prime is 344502089. The next prime is 344502149. The reversal of 344502139 is 931205443.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 344502139 - 2²¹ = 342404987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 344502139.

It is not a weakly prime, because it can be changed into another prime (344502149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172251069 + 172251070.

It is an arithmetic number, because the mean of its divisors is an integer number (172251070).

Almost surely, 2^344502139 is an apocalyptic number.

344502139 is a deficient number, since it is larger than the sum of its proper divisors (1).

344502139 is an equidigital number, since it uses as much as digits as its factorization.

344502139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 344502139 is about 18560.7688148956. The cubic root of 344502139 is about 701.0203751634.

The spelling of 344502139 in words is "three hundred forty-four million, five hundred two thousand, one hundred thirty-nine".