538444 has 12 divisors (see below), whose sum is σ = 948024. Its totient is φ = 267584.

The previous prime is 538423. The next prime is 538457. The reversal of 538444 is 444835.

It is a super-2 number, since 2×538444² = 579843882272, which contains 22 as substring.

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, 612 + ... + 1204.

It is an arithmetic number, because the mean of its divisors is an integer number (79002).

2⁵³⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

538444 is a deficient number, since it is larger than the sum of its proper divisors (409580).

538444 is a wasteful number, since it uses less digits than its factorization.

538444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 822 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 538444 is about 733.7874351609. The cubic root of 538444 is about 81.3542378110.

The spelling of 538444 in words is "five hundred thirty-eight thousand, four hundred forty-four".