345923449 has 2 divisors, whose sum is σ = 345923450. Its totient is φ = 345923448.

The previous prime is 345923441. The next prime is 345923453. The reversal of 345923449 is 944329543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334633849 + 11289600 = 18293^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 345923449 - 2³ = 345923441 is a prime.

It is not a weakly prime, because it can be changed into another prime (345923441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172961724 + 172961725.

It is an arithmetic number, because the mean of its divisors is an integer number (172961725).

Almost surely, 2^345923449 is an apocalyptic number.

It is an amenable number.

345923449 is a deficient number, since it is larger than the sum of its proper divisors (1).

345923449 is an equidigital number, since it uses as much as digits as its factorization.

345923449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 43.

The square root of 345923449 is about 18599.0174202833. The cubic root of 345923449 is about 701.9831172905.

The spelling of 345923449 in words is "three hundred forty-five million, nine hundred twenty-three thousand, four hundred forty-nine".