426619873 has 4 divisors (see below), whose sum is σ = 426817840. Its totient is φ = 426421908.

The previous prime is 426619867. The next prime is 426619889. The reversal of 426619873 is 378916624.

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 a de Polignac number, because none of the positive numbers 2^k-426619873 is a prime.

It is a super-2 number, since 2×426619873² = 364009032077072258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426619073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95715 + ... + 100072.

It is an arithmetic number, because the mean of its divisors is an integer number (106704460).

Almost surely, 2^426619873 is an apocalyptic number.

It is an amenable number.

426619873 is a deficient number, since it is larger than the sum of its proper divisors (197967).

426619873 is a wasteful number, since it uses less digits than its factorization.

426619873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197966.

The product of its digits is 435456, while the sum is 46.

The square root of 426619873 is about 20654.7784543916. The cubic root of 426619873 is about 752.8013005197.

The spelling of 426619873 in words is "four hundred twenty-six million, six hundred nineteen thousand, eight hundred seventy-three".