426397291 has 2 divisors, whose sum is σ = 426397292. Its totient is φ = 426397290.

The previous prime is 426397277. The next prime is 426397303. The reversal of 426397291 is 192793624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426397291 - 2¹¹ = 426395243 is a prime.

It is not a weakly prime, because it can be changed into another prime (426397201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213198645 + 213198646.

It is an arithmetic number, because the mean of its divisors is an integer number (213198646).

Almost surely, 2^426397291 is an apocalyptic number.

426397291 is a deficient number, since it is larger than the sum of its proper divisors (1).

426397291 is an equidigital number, since it uses as much as digits as its factorization.

426397291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 426397291 is about 20649.3896035694. The cubic root of 426397291 is about 752.6703571212.

The spelling of 426397291 in words is "four hundred twenty-six million, three hundred ninety-seven thousand, two hundred ninety-one".