426640395 has 16 divisors (see below), whose sum is σ = 682935840. Its totient is φ = 227437824.

The previous prime is 426640393. The next prime is 426640399. The reversal of 426640395 is 593046624.

It is not a de Polignac number, because 426640395 - 2¹ = 426640393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (426640391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36871 + ... + 47039.

It is an arithmetic number, because the mean of its divisors is an integer number (42683490).

Almost surely, 2^426640395 is an apocalyptic number.

426640395 is a deficient number, since it is larger than the sum of its proper divisors (256295445).

426640395 is a wasteful number, since it uses less digits than its factorization.

426640395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12974.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 426640395 is about 20655.2752341865. The cubic root of 426640395 is about 752.8133711721.

The spelling of 426640395 in words is "four hundred twenty-six million, six hundred forty thousand, three hundred ninety-five".