345942979 has 4 divisors (see below), whose sum is σ = 366292584. Its totient is φ = 325593376.

The previous prime is 345942973. The next prime is 345943033. The reversal of 345942979 is 979249543.

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: 979249543 = 14549 ⋅67307.

It is a cyclic number.

It is not a de Polignac number, because 345942979 - 2⁷ = 345942851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345942973) 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, 10174777 + ... + 10174810.

It is an arithmetic number, because the mean of its divisors is an integer number (91573146).

Almost surely, 2^345942979 is an apocalyptic number.

345942979 is a deficient number, since it is larger than the sum of its proper divisors (20349605).

345942979 is a wasteful number, since it uses less digits than its factorization.

345942979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20349604.

The product of its digits is 2449440, while the sum is 52.

The square root of 345942979 is about 18599.5424406086. The cubic root of 345942979 is about 701.9963277974.

It can be divided in two parts, 345942 and 979, that added together give a square (346921 = 589²).

The spelling of 345942979 in words is "three hundred forty-five million, nine hundred forty-two thousand, nine hundred seventy-nine".