7444881 has 24 divisors (see below), whose sum is σ = 11223680. Its totient is φ = 4751136.

The previous prime is 7444873. The next prime is 7444883. The reversal of 7444881 is 1884447.

It is a happy number.

It is not a de Polignac number, because 7444881 - 2³ = 7444873 is a prime.

It is a super-2 number, since 2×7444881² = 110852506208322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

7444881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7444883) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 26166 + ... + 26448.

Almost surely, 2^7444881 is an apocalyptic number.

It is an amenable number.

7444881 is a deficient number, since it is larger than the sum of its proper divisors (3778799).

7444881 is a wasteful number, since it uses less digits than its factorization.

7444881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 402 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 7444881 is about 2728.5309234092. The cubic root of 7444881 is about 195.2626834570.

It can be divided in two parts, 74448 and 81, that added together give a square (74529 = 273²).

The spelling of 7444881 in words is "seven million, four hundred forty-four thousand, eight hundred eighty-one".