74089989 has 12 divisors (see below), whose sum is σ = 109508256. Its totient is φ = 48244392.

The previous prime is 74089979. The next prime is 74090077. The reversal of 74089989 is 98998047.

It is not a de Polignac number, because 74089989 - 2¹¹ = 74087941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74089979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95337 + ... + 96110.

It is an arithmetic number, because the mean of its divisors is an integer number (9125688).

Almost surely, 2^74089989 is an apocalyptic number.

It is an amenable number.

74089989 is a deficient number, since it is larger than the sum of its proper divisors (35418267).

74089989 is a wasteful number, since it uses less digits than its factorization.

74089989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191496 (or 191493 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 74089989 is about 8607.5541822285. The cubic root of 74089989 is about 420.0037584698.

It can be divided in two parts, 74089 and 989, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 74089989 in words is "seventy-four million, eighty-nine thousand, nine hundred eighty-nine".