422390019 has 16 divisors (see below), whose sum is σ = 575167392. Its totient is φ = 275628288.

The previous prime is 422389999. The next prime is 422390021. The reversal of 422390019 is 910093224.

It is not a de Polignac number, because 422390019 - 2⁸ = 422389763 is a prime.

It is a super-2 number, since 2×422390019² = 356826656301640722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422390029) 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, 69757 + ... + 75569.

It is an arithmetic number, because the mean of its divisors is an integer number (35947962).

Almost surely, 2^422390019 is an apocalyptic number.

422390019 is a deficient number, since it is larger than the sum of its proper divisors (152777373).

422390019 is a wasteful number, since it uses less digits than its factorization.

422390019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 422390019 is about 20552.1293057435. The cubic root of 422390019 is about 750.3050723354.

The spelling of 422390019 in words is "four hundred twenty-two million, three hundred ninety thousand, nineteen".