345124399 has 2 divisors, whose sum is σ = 345124400. Its totient is φ = 345124398.

The previous prime is 345124387. The next prime is 345124421. The reversal of 345124399 is 993421543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345124399 - 2¹³ = 345116207 is a prime.

It is a super-2 number, since 2×345124399² = 238221701570222402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345124319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172562199 + 172562200.

It is an arithmetic number, because the mean of its divisors is an integer number (172562200).

Almost surely, 2^345124399 is an apocalyptic number.

345124399 is a deficient number, since it is larger than the sum of its proper divisors (1).

345124399 is an equidigital number, since it uses as much as digits as its factorization.

345124399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 345124399 is about 18577.5240277062. The cubic root of 345124399 is about 701.4421960195.

The spelling of 345124399 in words is "three hundred forty-five million, one hundred twenty-four thousand, three hundred ninety-nine".