74189489 has 4 divisors (see below), whose sum is σ = 80934000. Its totient is φ = 67444980.

The previous prime is 74189483. The next prime is 74189497. The reversal of 74189489 is 98498147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74189489 - 2¹⁶ = 74123953 is a prime.

It is a super-2 number, since 2×74189489² = 11008160556162242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74189483) 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 3 ways as a sum of consecutive naturals, for example, 3372239 + ... + 3372260.

It is an arithmetic number, because the mean of its divisors is an integer number (20233500).

Almost surely, 2^74189489 is an apocalyptic number.

It is an amenable number.

74189489 is a deficient number, since it is larger than the sum of its proper divisors (6744511).

74189489 is a wasteful number, since it uses less digits than its factorization.

74189489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744510.

The product of its digits is 580608, while the sum is 50.

The square root of 74189489 is about 8613.3320497935. The cubic root of 74189489 is about 420.1916906536.

The spelling of 74189489 in words is "seventy-four million, one hundred eighty-nine thousand, four hundred eighty-nine".