426401897 has 4 divisors (see below), whose sum is σ = 426741840. Its totient is φ = 426061956.

The previous prime is 426401879. The next prime is 426401929. The reversal of 426401897 is 798104624.

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 426401897 - 2¹⁴ = 426385513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426401827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168083 + ... + 170600.

It is an arithmetic number, because the mean of its divisors is an integer number (106685460).

Almost surely, 2^426401897 is an apocalyptic number.

It is an amenable number.

426401897 is a deficient number, since it is larger than the sum of its proper divisors (339943).

426401897 is a wasteful number, since it uses less digits than its factorization.

426401897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339942.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 426401897 is about 20649.5011319886. The cubic root of 426401897 is about 752.6730672598.

The spelling of 426401897 in words is "four hundred twenty-six million, four hundred one thousand, eight hundred ninety-seven".