7947444 has 12 divisors (see below), whose sum is σ = 18544064. Its totient is φ = 2649144.

The previous prime is 7947431. The next prime is 7947461. The reversal of 7947444 is 4447497.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7947444² = 126323732266272, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331132 + ... + 331155.

Almost surely, 2^7947444 is an apocalyptic number.

It is an amenable number.

7947444 is an abundant number, since it is smaller than the sum of its proper divisors (10596620).

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

7947444 is a wasteful number, since it uses less digits than its factorization.

7947444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662294 (or 662292 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 7947444 is about 2819.1211396462. The cubic root of 7947444 is about 199.5610707436.

The spelling of 7947444 in words is "seven million, nine hundred forty-seven thousand, four hundred forty-four".