426904381 has 2 divisors, whose sum is σ = 426904382. Its totient is φ = 426904380.

The previous prime is 426904363. The next prime is 426904397. The reversal of 426904381 is 183409624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281098756 + 145805625 = 16766^2 + 12075^2 .

It is a cyclic number.

It is not a de Polignac number, because 426904381 - 2⁵ = 426904349 is a prime.

It is a super-2 number, since 2×426904381² = 364494701033986322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426904381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426904351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213452190 + 213452191.

It is an arithmetic number, because the mean of its divisors is an integer number (213452191).

Almost surely, 2^426904381 is an apocalyptic number.

It is an amenable number.

426904381 is a deficient number, since it is larger than the sum of its proper divisors (1).

426904381 is an equidigital number, since it uses as much as digits as its factorization.

426904381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 426904381 is about 20661.6645263638. The cubic root of 426904381 is about 752.9686082431.

The spelling of 426904381 in words is "four hundred twenty-six million, nine hundred four thousand, three hundred eighty-one".