345789491 has 4 divisors (see below), whose sum is σ = 346678800. Its totient is φ = 344900184.

The previous prime is 345789487. The next prime is 345789523. The reversal of 345789491 is 194987543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345789491 - 2² = 345789487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345789421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444071 + ... + 444848.

It is an arithmetic number, because the mean of its divisors is an integer number (86669700).

Almost surely, 2^345789491 is an apocalyptic number.

345789491 is a deficient number, since it is larger than the sum of its proper divisors (889309).

345789491 is an equidigital number, since it uses as much as digits as its factorization.

345789491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889308.

The product of its digits is 1088640, while the sum is 50.

The square root of 345789491 is about 18595.4158598295. The cubic root of 345789491 is about 701.8924918494.

The spelling of 345789491 in words is "three hundred forty-five million, seven hundred eighty-nine thousand, four hundred ninety-one".