74238489 has 18 divisors (see below), whose sum is σ = 116118990. Its totient is φ = 45684288.

The previous prime is 74238481. The next prime is 74238509. The reversal of 74238489 is 98483247.

It can be written as a sum of positive squares in 3 ways, for example, as 416025 + 73822464 = 645^2 + 8592^2 .

It is not a de Polignac number, because 74238489 - 2³ = 74238481 is a prime.

It is a super-2 number, since 2×74238489² = 11022706498006242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74238481) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22884 + ... + 25925.

It is an arithmetic number, because the mean of its divisors is an integer number (6451055).

Almost surely, 2^74238489 is an apocalyptic number.

It is an amenable number.

74238489 is a deficient number, since it is larger than the sum of its proper divisors (41880501).

74238489 is a wasteful number, since it uses less digits than its factorization.

74238489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48841 (or 48825 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 74238489 is about 8616.1760079516. The cubic root of 74238489 is about 420.2841784255.

The spelling of 74238489 in words is "seventy-four million, two hundred thirty-eight thousand, four hundred eighty-nine".