1005490844 has 12 divisors (see below), whose sum is σ = 1800530424. Its totient is φ = 491053584.

The previous prime is 1005490807. The next prime is 1005490861. The reversal of 1005490844 is 4480945001.

It is a happy number.

It is a super-2 number, since 2×1005490844² = 2022023674735664672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2922767 + ... + 2923110.

It is an arithmetic number, because the mean of its divisors is an integer number (150044202).

Almost surely, 2^1005490844 is an apocalyptic number.

It is an amenable number.

1005490844 is a deficient number, since it is larger than the sum of its proper divisors (795039580).

1005490844 is a wasteful number, since it uses less digits than its factorization.

1005490844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845924 (or 5845922 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1005490844 is about 31709.4756184961. The cubic root of 1005490844 is about 1001.8269415852.

The spelling of 1005490844 in words is "one billion, five million, four hundred ninety thousand, eight hundred forty-four".