345974219 has 4 divisors (see below), whose sum is σ = 349333296. Its totient is φ = 342615144.

The previous prime is 345974207. The next prime is 345974221. The reversal of 345974219 is 912479543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912479543 = 2677 ⋅340859.

It is a cyclic number.

It is not a de Polignac number, because 345974219 - 2¹² = 345970123 is a prime.

It is a super-2 number, since 2×345974219² = 239396320425319922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345974219.

It is not an unprimeable number, because it can be changed into a prime (345974269) 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, 1679384 + ... + 1679589.

It is an arithmetic number, because the mean of its divisors is an integer number (87333324).

Almost surely, 2^345974219 is an apocalyptic number.

345974219 is a deficient number, since it is larger than the sum of its proper divisors (3359077).

345974219 is a wasteful number, since it uses less digits than its factorization.

345974219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359076.

The product of its digits is 272160, while the sum is 44.

The square root of 345974219 is about 18600.3822272554. The cubic root of 345974219 is about 702.0174581633.

The spelling of 345974219 in words is "three hundred forty-five million, nine hundred seventy-four thousand, two hundred nineteen".