74989944 has 96 divisors (see below), whose sum is σ = 209664000. Its totient is φ = 24204096.

The previous prime is 74989927. The next prime is 74989963. The reversal of 74989944 is 44998947.

It is a happy number.

It is a super-2 number, since 2×74989944² = 11246983402246272, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 539427 + ... + 539565.

It is an arithmetic number, because the mean of its divisors is an integer number (2184000).

Almost surely, 2^74989944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74989944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104832000).

74989944 is an abundant number, since it is smaller than the sum of its proper divisors (134674056).

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

74989944 is a wasteful number, since it uses less digits than its factorization.

74989944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 330 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 74989944 is about 8659.6734349512. The cubic root of 74989944 is about 421.6974838998.

The spelling of 74989944 in words is "seventy-four million, nine hundred eighty-nine thousand, nine hundred forty-four".