426333891 has 4 divisors (see below), whose sum is σ = 568445192. Its totient is φ = 284222592.

The previous prime is 426333881. The next prime is 426333907. The reversal of 426333891 is 198333624.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 426333891 - 2²⁵ = 392779459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426333821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71055646 + ... + 71055651.

It is an arithmetic number, because the mean of its divisors is an integer number (142111298).

Almost surely, 2^426333891 is an apocalyptic number.

426333891 is a deficient number, since it is larger than the sum of its proper divisors (142111301).

426333891 is a wasteful number, since it uses less digits than its factorization.

426333891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142111300.

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

The square root of 426333891 is about 20647.8543921639. The cubic root of 426333891 is about 752.6330510166.

The spelling of 426333891 in words is "four hundred twenty-six million, three hundred thirty-three thousand, eight hundred ninety-one".