426197399 has 2 divisors, whose sum is σ = 426197400. Its totient is φ = 426197398.

The previous prime is 426197357. The next prime is 426197411. The reversal of 426197399 is 993791624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426197399 - 2⁸ = 426197143 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426197099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213098699 + 213098700.

It is an arithmetic number, because the mean of its divisors is an integer number (213098700).

Almost surely, 2^426197399 is an apocalyptic number.

426197399 is a deficient number, since it is larger than the sum of its proper divisors (1).

426197399 is an equidigital number, since it uses as much as digits as its factorization.

426197399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 426197399 is about 20644.5488931098. The cubic root of 426197399 is about 752.5527232442.

The spelling of 426197399 in words is "four hundred twenty-six million, one hundred ninety-seven thousand, three hundred ninety-nine".