426578983 has 2 divisors, whose sum is σ = 426578984. Its totient is φ = 426578982.

The previous prime is 426578947. The next prime is 426579029. The reversal of 426578983 is 389875624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426578983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426578983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426578783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213289491 + 213289492.

It is an arithmetic number, because the mean of its divisors is an integer number (213289492).

Almost surely, 2^426578983 is an apocalyptic number.

426578983 is a deficient number, since it is larger than the sum of its proper divisors (1).

426578983 is an equidigital number, since it uses as much as digits as its factorization.

426578983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The square root of 426578983 is about 20653.7885870849. The cubic root of 426578983 is about 752.7772486407. Note that the first 3 decimals are identical.

The spelling of 426578983 in words is "four hundred twenty-six million, five hundred seventy-eight thousand, nine hundred eighty-three".