345117399 has 16 divisors (see below), whose sum is σ = 502529664. Its totient is φ = 208936800.

The previous prime is 345117379. The next prime is 345117419. The reversal of 345117399 is 993711543.

It is an interprime number because it is at equal distance from previous prime (345117379) and next prime (345117419).

It is not a de Polignac number, because 345117399 - 2⁹ = 345116887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345117399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345117379) 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, 28572 + ... + 38814.

It is an arithmetic number, because the mean of its divisors is an integer number (31408104).

Almost surely, 2^345117399 is an apocalyptic number.

345117399 is a deficient number, since it is larger than the sum of its proper divisors (157412265).

345117399 is a wasteful number, since it uses less digits than its factorization.

345117399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11278.

The product of its digits is 102060, while the sum is 42.

The square root of 345117399 is about 18577.3356270484. The cubic root of 345117399 is about 701.4374536439.

The spelling of 345117399 in words is "three hundred forty-five million, one hundred seventeen thousand, three hundred ninety-nine".