74443845 has 16 divisors (see below), whose sum is σ = 136126080. Its totient is φ = 34031424.

The previous prime is 74443829. The next prime is 74443849. The reversal of 74443845 is 54834447.

It is not a de Polignac number, because 74443845 - 2⁴ = 74443829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74443849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354390 + ... + 354599.

It is an arithmetic number, because the mean of its divisors is an integer number (8507880).

Almost surely, 2^74443845 is an apocalyptic number.

It is an amenable number.

74443845 is a deficient number, since it is larger than the sum of its proper divisors (61682235).

74443845 is a wasteful number, since it uses less digits than its factorization.

74443845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709004.

The product of its digits is 215040, while the sum is 39.

The square root of 74443845 is about 8628.0846657877. The cubic root of 74443845 is about 420.6713469519.

The spelling of 74443845 in words is "seventy-four million, four hundred forty-three thousand, eight hundred forty-five".