426904891 has 4 divisors (see below), whose sum is σ = 487891312. Its totient is φ = 365918472.

The previous prime is 426904889. The next prime is 426904897. The reversal of 426904891 is 198409624.

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

It is a cyclic number.

It is not a de Polignac number, because 426904891 - 2¹ = 426904889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426904897) 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, 30493200 + ... + 30493213.

It is an arithmetic number, because the mean of its divisors is an integer number (121972828).

Almost surely, 2^426904891 is an apocalyptic number.

426904891 is a deficient number, since it is larger than the sum of its proper divisors (60986421).

426904891 is an equidigital number, since it uses as much as digits as its factorization.

426904891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60986420.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 426904891 is about 20661.6768680570. The cubic root of 426904891 is about 752.9689080868.

The spelling of 426904891 in words is "four hundred twenty-six million, nine hundred four thousand, eight hundred ninety-one".