345848409 has 9 divisors (see below), whose sum is σ = 499639413. Its totient is φ = 230528412.

The previous prime is 345848387. The next prime is 345848413. The reversal of 345848409 is 904848543.

It is a happy number.

The square root of 345848409 is 18597.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 345848409 - 2⁹ = 345847897 is a prime.

It is a super-2 number, since 2×345848409² = 239222244015662562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345848449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 52692 + ... + 58890.

Almost surely, 2^345848409 is an apocalyptic number.

345848409 is the 18597-th square number.

345848409 is the 9299-th centered octagonal number.

It is an amenable number.

345848409 is a deficient number, since it is larger than the sum of its proper divisors (153791004).

345848409 is an frugal number, since it uses more digits than its factorization.

345848409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404 (or 6202 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The cubic root of 345848409 is about 701.9323540145.

The spelling of 345848409 in words is "three hundred forty-five million, eight hundred forty-eight thousand, four hundred nine".