345816959 has 4 divisors (see below), whose sum is σ = 345883320. Its totient is φ = 345750600.

The previous prime is 345816953. The next prime is 345816979. The reversal of 345816959 is 959618543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959618543 = 13 ⋅73816811.

It is a cyclic number.

It is not a de Polignac number, because 345816959 - 2²⁰ = 344768383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345816953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24629 + ... + 36030.

It is an arithmetic number, because the mean of its divisors is an integer number (86470830).

Almost surely, 2^345816959 is an apocalyptic number.

345816959 is a deficient number, since it is larger than the sum of its proper divisors (66361).

345816959 is an equidigital number, since it uses as much as digits as its factorization.

345816959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66360.

The product of its digits is 1166400, while the sum is 50.

The square root of 345816959 is about 18596.1544142868. The cubic root of 345816959 is about 701.9110764440.

The spelling of 345816959 in words is "three hundred forty-five million, eight hundred sixteen thousand, nine hundred fifty-nine".