345251979 has 6 divisors (see below), whose sum is σ = 498697316. Its totient is φ = 230167980.

The previous prime is 345251971. The next prime is 345251993. The reversal of 345251979 is 979152543.

345251979 = 2502² + 2503² + ... + 2555².

It is a happy number.

345251979 is a `hidden beast` number, since 3 + 452 + 5 + 197 + 9 = 666.

It is not a de Polignac number, because 345251979 - 2³ = 345251971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345251971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19180657 + ... + 19180674.

Almost surely, 2^345251979 is an apocalyptic number.

345251979 is a deficient number, since it is larger than the sum of its proper divisors (153445337).

345251979 is a wasteful number, since it uses less digits than its factorization.

345251979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38361337 (or 38361334 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 345251979 is about 18580.9574295837. The cubic root of 345251979 is about 701.5286179694.

The spelling of 345251979 in words is "three hundred forty-five million, two hundred fifty-one thousand, nine hundred seventy-nine".