426394889 has 4 divisors (see below), whose sum is σ = 426513024. Its totient is φ = 426276756.

The previous prime is 426394883. The next prime is 426394909. The reversal of 426394889 is 988493624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426394889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426394889.

It is not an unprimeable number, because it can be changed into a prime (426394883) 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, 53477 + ... + 60930.

It is an arithmetic number, because the mean of its divisors is an integer number (106628256).

Almost surely, 2^426394889 is an apocalyptic number.

It is an amenable number.

426394889 is a deficient number, since it is larger than the sum of its proper divisors (118135).

426394889 is a wasteful number, since it uses less digits than its factorization.

426394889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118134.

The product of its digits is 2985984, while the sum is 53.

The square root of 426394889 is about 20649.3314419620. The cubic root of 426394889 is about 752.6689437933.

The spelling of 426394889 in words is "four hundred twenty-six million, three hundred ninety-four thousand, eight hundred eighty-nine".