345870393 has 12 divisors (see below), whose sum is σ = 506895984. Its totient is φ = 209618200.

The previous prime is 345870391. The next prime is 345870397. The reversal of 345870393 is 393078543.

It is a happy number.

It is not a de Polignac number, because 345870393 - 2¹ = 345870391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345870391) 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 11 ways as a sum of consecutive naturals, for example, 476043 + ... + 476768.

It is an arithmetic number, because the mean of its divisors is an integer number (42241332).

Almost surely, 2^345870393 is an apocalyptic number.

345870393 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

345870393 is a deficient number, since it is larger than the sum of its proper divisors (161025591).

345870393 is a wasteful number, since it uses less digits than its factorization.

345870393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952836 (or 952825 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 345870393 is about 18597.5910536822. The cubic root of 345870393 is about 701.9472265748.

The spelling of 345870393 in words is "three hundred forty-five million, eight hundred seventy thousand, three hundred ninety-three".