426404765 has 4 divisors (see below), whose sum is σ = 511685724. Its totient is φ = 341123808.

The previous prime is 426404749. The next prime is 426404789. The reversal of 426404765 is 567404624.

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 49928356 + 376476409 = 7066^2 + 19403^2 .

It is a cyclic number.

It is not a de Polignac number, because 426404765 - 2⁴ = 426404749 is a prime.

It is a super-2 number, since 2×426404765² = 363642047229410450, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42640472 + ... + 42640481.

It is an arithmetic number, because the mean of its divisors is an integer number (127921431).

Almost surely, 2^426404765 is an apocalyptic number.

It is an amenable number.

426404765 is a deficient number, since it is larger than the sum of its proper divisors (85280959).

426404765 is an equidigital number, since it uses as much as digits as its factorization.

426404765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85280958.

The product of its (nonzero) digits is 161280, while the sum is 38.

The square root of 426404765 is about 20649.5705766488. The cubic root of 426404765 is about 752.6747547613.

The spelling of 426404765 in words is "four hundred twenty-six million, four hundred four thousand, seven hundred sixty-five".