345022399 has 2 divisors, whose sum is σ = 345022400. Its totient is φ = 345022398.

The previous prime is 345022397. The next prime is 345022409. The reversal of 345022399 is 993220543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345022399 - 2¹ = 345022397 is a prime.

Together with 345022397, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345022393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172511199 + 172511200.

It is an arithmetic number, because the mean of its divisors is an integer number (172511200).

Almost surely, 2^345022399 is an apocalyptic number.

345022399 is a deficient number, since it is larger than the sum of its proper divisors (1).

345022399 is an equidigital number, since it uses as much as digits as its factorization.

345022399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 345022399 is about 18574.7785720315. The cubic root of 345022399 is about 701.3730864909.

The spelling of 345022399 in words is "three hundred forty-five million, twenty-two thousand, three hundred ninety-nine".