426401279 has 2 divisors, whose sum is σ = 426401280. Its totient is φ = 426401278.

The previous prime is 426401263. The next prime is 426401299. The reversal of 426401279 is 972104624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426401279 - 2⁴ = 426401263 is a prime.

It is a super-3 number, since 3×426401279³ (a number of 27 digits) contains 333 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 (426401219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213200639 + 213200640.

It is an arithmetic number, because the mean of its divisors is an integer number (213200640).

Almost surely, 2^426401279 is an apocalyptic number.

426401279 is a deficient number, since it is larger than the sum of its proper divisors (1).

426401279 is an equidigital number, since it uses as much as digits as its factorization.

426401279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 426401279 is about 20649.4861679413. The cubic root of 426401279 is about 752.6727036340.

The spelling of 426401279 in words is "four hundred twenty-six million, four hundred one thousand, two hundred seventy-nine".