426344405 has 4 divisors (see below), whose sum is σ = 511613292. Its totient is φ = 341075520.

The previous prime is 426344393. The next prime is 426344431. The reversal of 426344405 is 504443624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 149255089 + 277089316 = 12217^2 + 16646^2 .

It is not a de Polignac number, because 426344405 - 2¹² = 426340309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42634436 + ... + 42634445.

It is an arithmetic number, because the mean of its divisors is an integer number (127903323).

Almost surely, 2^426344405 is an apocalyptic number.

It is an amenable number.

426344405 is a deficient number, since it is larger than the sum of its proper divisors (85268887).

426344405 is an equidigital number, since it uses as much as digits as its factorization.

426344405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85268886.

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 426344405 is about 20648.1089933195. The cubic root of 426344405 is about 752.6392379661.

The spelling of 426344405 in words is "four hundred twenty-six million, three hundred forty-four thousand, four hundred five".