345903953 has 4 divisors (see below), whose sum is σ = 345980580. Its totient is φ = 345827328.

The previous prime is 345903907. The next prime is 345903959. The reversal of 345903953 is 359309543.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36566209 + 309337744 = 6047^2 + 17588^2 .

It is a cyclic number.

It is not a de Polignac number, because 345903953 - 2⁸ = 345903697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345903953.

It is not an unprimeable number, because it can be changed into a prime (345903959) 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, 31088 + ... + 40721.

It is an arithmetic number, because the mean of its divisors is an integer number (86495145).

Almost surely, 2^345903953 is an apocalyptic number.

It is an amenable number.

345903953 is a deficient number, since it is larger than the sum of its proper divisors (76627).

345903953 is an equidigital number, since it uses as much as digits as its factorization.

345903953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76626.

The product of its (nonzero) digits is 218700, while the sum is 41.

The square root of 345903953 is about 18598.4932991896. The cubic root of 345903953 is about 701.9699292861.

The spelling of 345903953 in words is "three hundred forty-five million, nine hundred three thousand, nine hundred fifty-three".