426445019 has 24 divisors (see below), whose sum is σ = 576922080. Its totient is φ = 306725760.

The previous prime is 426445007. The next prime is 426445027. The reversal of 426445019 is 910544624.

It is a de Polignac number, because none of the positive numbers 2^k-426445019 is a prime.

It is a super-2 number, since 2×426445019² = 363710708459820722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 426445019.

It is not an unprimeable number, because it can be changed into a prime (426445619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8354 + ... + 30375.

It is an arithmetic number, because the mean of its divisors is an integer number (24038420).

Almost surely, 2^426445019 is an apocalyptic number.

426445019 is a deficient number, since it is larger than the sum of its proper divisors (150477061).

426445019 is a wasteful number, since it uses less digits than its factorization.

426445019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38771 (or 38760 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 426445019 is about 20650.5452470389. The cubic root of 426445019 is about 752.6984389996.

The spelling of 426445019 in words is "four hundred twenty-six million, four hundred forty-five thousand, nineteen".