426245999 has 4 divisors (see below), whose sum is σ = 426581064. Its totient is φ = 425910936.

The previous prime is 426245977. The next prime is 426246011. The reversal of 426245999 is 999542624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426245999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426245929) 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, 165617 + ... + 168170.

It is an arithmetic number, because the mean of its divisors is an integer number (106645266).

Almost surely, 2^426245999 is an apocalyptic number.

426245999 is a deficient number, since it is larger than the sum of its proper divisors (335065).

426245999 is a wasteful number, since it uses less digits than its factorization.

426245999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335064.

The product of its digits is 1399680, while the sum is 50.

The square root of 426245999 is about 20645.7259257213. The cubic root of 426245999 is about 752.5813271042.

The spelling of 426245999 in words is "four hundred twenty-six million, two hundred forty-five thousand, nine hundred ninety-nine".