345456739 has 2 divisors, whose sum is σ = 345456740. Its totient is φ = 345456738.

The previous prime is 345456697. The next prime is 345456767. The reversal of 345456739 is 937654543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345456739 - 2⁹ = 345456227 is a prime.

It is not a weakly prime, because it can be changed into another prime (345456799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172728369 + 172728370.

It is an arithmetic number, because the mean of its divisors is an integer number (172728370).

Almost surely, 2^345456739 is an apocalyptic number.

345456739 is a deficient number, since it is larger than the sum of its proper divisors (1).

345456739 is an equidigital number, since it uses as much as digits as its factorization.

345456739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 46.

The square root of 345456739 is about 18586.4665549964. The cubic root of 345456739 is about 701.6672767081.

The spelling of 345456739 in words is "three hundred forty-five million, four hundred fifty-six thousand, seven hundred thirty-nine".