426222993 has 16 divisors (see below), whose sum is σ = 653846400. Its totient is φ = 241919616.

The previous prime is 426222989. The next prime is 426223037. The reversal of 426222993 is 399222624.

It is a happy number.

It is not a de Polignac number, because 426222993 - 2² = 426222989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (426222893) 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, 64980 + ... + 71237.

It is an arithmetic number, because the mean of its divisors is an integer number (40865400).

Almost surely, 2^426222993 is an apocalyptic number.

It is an amenable number.

426222993 is a deficient number, since it is larger than the sum of its proper divisors (227623407).

426222993 is a wasteful number, since it uses less digits than its factorization.

426222993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136376.

The product of its digits is 93312, while the sum is 39.

The square root of 426222993 is about 20645.1687568787. The cubic root of 426222993 is about 752.5677870377.

The spelling of 426222993 in words is "four hundred twenty-six million, two hundred twenty-two thousand, nine hundred ninety-three".