345872329 has 16 divisors (see below), whose sum is σ = 387690624. Its totient is φ = 308433840.

The previous prime is 345872323. The next prime is 345872339. The reversal of 345872329 is 923278543.

It is not a de Polignac number, because 345872329 - 2⁵ = 345872297 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345872323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68092 + ... + 72994.

It is an arithmetic number, because the mean of its divisors is an integer number (24230664).

Almost surely, 2^345872329 is an apocalyptic number.

It is an amenable number.

345872329 is a deficient number, since it is larger than the sum of its proper divisors (41818295).

345872329 is an equidigital number, since it uses as much as digits as its factorization.

345872329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4967 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 345872329 is about 18597.6431033612. The cubic root of 345872329 is about 701.9485362824.

The spelling of 345872329 in words is "three hundred forty-five million, eight hundred seventy-two thousand, three hundred twenty-nine".