345788947 has 4 divisors (see below), whose sum is σ = 395187376. Its totient is φ = 296390520.

The previous prime is 345788903. The next prime is 345788977. The reversal of 345788947 is 749887543.

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 345788947 - 2²⁷ = 211571219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345788977) 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, 24699204 + ... + 24699217.

It is an arithmetic number, because the mean of its divisors is an integer number (98796844).

Almost surely, 2^345788947 is an apocalyptic number.

345788947 is a deficient number, since it is larger than the sum of its proper divisors (49398429).

345788947 is an equidigital number, since it uses as much as digits as its factorization.

345788947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49398428.

The product of its digits is 6773760, while the sum is 55.

The square root of 345788947 is about 18595.4012325629. The cubic root of 345788947 is about 701.8921237741.

The spelling of 345788947 in words is "three hundred forty-five million, seven hundred eighty-eight thousand, nine hundred forty-seven".