345418947 has 12 divisors (see below), whose sum is σ = 499205304. Its totient is φ = 230156160.

The previous prime is 345418919. The next prime is 345418949. The reversal of 345418947 is 749814543.

It is not a de Polignac number, because 345418947 - 2⁶ = 345418883 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (345418949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9508 + ... + 27950.

It is an arithmetic number, because the mean of its divisors is an integer number (41600442).

Almost surely, 2^345418947 is an apocalyptic number.

345418947 is a deficient number, since it is larger than the sum of its proper divisors (153786357).

345418947 is a wasteful number, since it uses less digits than its factorization.

345418947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20530 (or 20527 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 345418947 is about 18585.4498734897. The cubic root of 345418947 is about 701.6416889632.

The spelling of 345418947 in words is "three hundred forty-five million, four hundred eighteen thousand, nine hundred forty-seven".