426749457 has 4 divisors (see below), whose sum is σ = 568999280. Its totient is φ = 284499636.

The previous prime is 426749423. The next prime is 426749461. The reversal of 426749457 is 754947624.

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 not a de Polignac number, because 426749457 - 2⁸ = 426749201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426749467) 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, 71124907 + ... + 71124912.

It is an arithmetic number, because the mean of its divisors is an integer number (142249820).

Almost surely, 2^426749457 is an apocalyptic number.

It is an amenable number.

426749457 is a deficient number, since it is larger than the sum of its proper divisors (142249823).

426749457 is a wasteful number, since it uses less digits than its factorization.

426749457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142249822.

The product of its digits is 1693440, while the sum is 48.

The square root of 426749457 is about 20657.9151174556. The cubic root of 426749457 is about 752.8775128848.

The spelling of 426749457 in words is "four hundred twenty-six million, seven hundred forty-nine thousand, four hundred fifty-seven".