74122389 has 12 divisors (see below), whose sum is σ = 116799072. Its totient is φ = 44922600.

The previous prime is 74122379. The next prime is 74122393. The reversal of 74122389 is 98322147.

74122389 is a `hidden beast` number, since 7 + 412 + 238 + 9 = 666.

It is not a de Polignac number, because 74122389 - 2¹³ = 74114197 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74122309) 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 11 ways as a sum of consecutive naturals, for example, 374257 + ... + 374454.

It is an arithmetic number, because the mean of its divisors is an integer number (9733256).

Almost surely, 2^74122389 is an apocalyptic number.

It is an amenable number.

74122389 is a deficient number, since it is larger than the sum of its proper divisors (42676683).

74122389 is a wasteful number, since it uses less digits than its factorization.

74122389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748728 (or 748725 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 74122389 is about 8609.4360442482. The cubic root of 74122389 is about 420.0649729415.

It can be divided in two parts, 7412 and 2389, that added together give a square (9801 = 99²).

The spelling of 74122389 in words is "seventy-four million, one hundred twenty-two thousand, three hundred eighty-nine".