345081399 has 16 divisors (see below), whose sum is σ = 496175232. Its totient is φ = 212069088.

The previous prime is 345081361. The next prime is 345081403. The reversal of 345081399 is 993180543.

It is not a de Polignac number, because 345081399 - 2¹³ = 345073207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345081399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345081329) 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 15 ways as a sum of consecutive naturals, for example, 25072 + ... + 36314.

It is an arithmetic number, because the mean of its divisors is an integer number (31010952).

Almost surely, 2^345081399 is an apocalyptic number.

345081399 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

345081399 is a deficient number, since it is larger than the sum of its proper divisors (151093833).

345081399 is a wasteful number, since it uses less digits than its factorization.

345081399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12046.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 345081399 is about 18576.3666791975. The cubic root of 345081399 is about 701.4130632708.

The spelling of 345081399 in words is "three hundred forty-five million, eighty-one thousand, three hundred ninety-nine".