426397290 has 32 divisors (see below), whose sum is σ = 1116386496. Its totient is φ = 103368960.

The previous prime is 426397277. The next prime is 426397291. The reversal of 426397290 is 92793624.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (426397291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645727 + ... + 646386.

It is an arithmetic number, because the mean of its divisors is an integer number (34887078).

Almost surely, 2^426397290 is an apocalyptic number.

426397290 is an abundant number, since it is smaller than the sum of its proper divisors (689989206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426397290 is a wasteful number, since it uses less digits than its factorization.

426397290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292134.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 426397290 is about 20649.3895793556. The cubic root of 426397290 is about 752.6703565328.

The spelling of 426397290 in words is "four hundred twenty-six million, three hundred ninety-seven thousand, two hundred ninety".