426512897 has 4 divisors (see below), whose sum is σ = 445056960. Its totient is φ = 407968836.

The previous prime is 426512861. The next prime is 426512899. The reversal of 426512897 is 798215624.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 426512897 - 2⁸ = 426512641 is a prime.

It is a super-3 number, since 3×426512897³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426512899) 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, 9271997 + ... + 9272042.

It is an arithmetic number, because the mean of its divisors is an integer number (111264240).

Almost surely, 2^426512897 is an apocalyptic number.

It is an amenable number.

426512897 is a deficient number, since it is larger than the sum of its proper divisors (18544063).

426512897 is a wasteful number, since it uses less digits than its factorization.

426512897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18544062.

The product of its digits is 241920, while the sum is 44.

The square root of 426512897 is about 20652.1886733586. The cubic root of 426512897 is about 752.7383729901.

The spelling of 426512897 in words is "four hundred twenty-six million, five hundred twelve thousand, eight hundred ninety-seven".