444040428 has 24 divisors (see below), whose sum is σ = 1115794288. Its totient is φ = 136627776.

The previous prime is 444040417. The next prime is 444040439. The reversal of 444040428 is 824040444.

It is an interprime number because it is at equal distance from previous prime (444040417) and next prime (444040439).

It is a junction number, because it is equal to n+sod(n) for n = 444040395 and 444040404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423051 + ... + 1423362.

Almost surely, 2^444040428 is an apocalyptic number.

It is an amenable number.

444040428 is an abundant number, since it is smaller than the sum of its proper divisors (671753860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444040428 is a wasteful number, since it uses less digits than its factorization.

444040428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846433 (or 2846431 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

The square root of 444040428 is about 21072.2667978554. The cubic root of 444040428 is about 762.9115165753.

The spelling of 444040428 in words is "four hundred forty-four million, forty thousand, four hundred twenty-eight".