345890369 has 8 divisors (see below), whose sum is σ = 377903712. Its totient is φ = 313971840.

The previous prime is 345890329. The next prime is 345890371. The reversal of 345890369 is 963098543.

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 345890369 - 2²⁴ = 329113153 is a prime.

It is a super-2 number, since 2×345890369² = 239280294733912322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345890329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15959 + ... + 30764.

It is an arithmetic number, because the mean of its divisors is an integer number (47237964).

Almost surely, 2^345890369 is an apocalyptic number.

It is an amenable number.

345890369 is a deficient number, since it is larger than the sum of its proper divisors (32013343).

345890369 is a wasteful number, since it uses less digits than its factorization.

345890369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47407.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 345890369 is about 18598.1281047314. The cubic root of 345890369 is about 701.9607401415.

The spelling of 345890369 in words is "three hundred forty-five million, eight hundred ninety thousand, three hundred sixty-nine".