345923905 has 8 divisors (see below), whose sum is σ = 439526952. Its totient is φ = 260460288.

The previous prime is 345923891. The next prime is 345923911. The reversal of 345923905 is 509329543.

345923905 = 13151² + 13152².

It can be written as a sum of positive squares in 4 ways, for example, as 29333056 + 316590849 = 5416^2 + 17793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345923905 - 2⁵ = 345923873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034762 + ... + 2034931.

It is an arithmetic number, because the mean of its divisors is an integer number (54940869).

Almost surely, 2^345923905 is an apocalyptic number.

345923905 is the 13152-nd centered square number.

It is an amenable number.

345923905 is a deficient number, since it is larger than the sum of its proper divisors (93603047).

345923905 is a wasteful number, since it uses less digits than its factorization.

345923905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069715.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 345923905 is about 18599.0296789913. The cubic root of 345923905 is about 701.9834257443.

The spelling of 345923905 in words is "three hundred forty-five million, nine hundred twenty-three thousand, nine hundred five".