247444 has 6 divisors (see below), whose sum is σ = 433034. Its totient is φ = 123720.

The previous prime is 247439. The next prime is 247451. The reversal of 247444 is 444742.

247444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 44944 = 450^2 + 212^2 .

It is a super-2 number, since 2×247444² = 122457066272, which contains 22 as substring.

It is a plaindrome in base 11.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30927 + ... + 30934.

2²⁴⁷⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

247444 is a deficient number, since it is larger than the sum of its proper divisors (185590).

247444 is a wasteful number, since it uses less digits than its factorization.

247444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61865 (or 61863 counting only the distinct ones).

The product of its digits is 3584, while the sum is 25.

The square root of 247444 is about 497.4374332517. The cubic root of 247444 is about 62.7806260981.

The spelling of 247444 in words is "two hundred forty-seven thousand, four hundred forty-four", and thus it is an iban number.