345549439 has 2 divisors, whose sum is σ = 345549440. Its totient is φ = 345549438.

The previous prime is 345549383. The next prime is 345549443. The reversal of 345549439 is 934945543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345549439 - 2⁹ = 345548927 is a prime.

It is a super-4 number, since 4×345549439⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345549469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172774719 + 172774720.

It is an arithmetic number, because the mean of its divisors is an integer number (172774720).

Almost surely, 2^345549439 is an apocalyptic number.

345549439 is a deficient number, since it is larger than the sum of its proper divisors (1).

345549439 is an equidigital number, since it uses as much as digits as its factorization.

345549439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 46.

The square root of 345549439 is about 18588.9601376731. The cubic root of 345549439 is about 701.7300329880.

The spelling of 345549439 in words is "three hundred forty-five million, five hundred forty-nine thousand, four hundred thirty-nine".