74342989 has 8 divisors (see below), whose sum is σ = 89961408. Its totient is φ = 59974080.

The previous prime is 74342987. The next prime is 74343007. The reversal of 74342989 is 98924347.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74342989 - 2¹ = 74342987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74342987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312247 + ... + 312484.

It is an arithmetic number, because the mean of its divisors is an integer number (11245176).

Almost surely, 2^74342989 is an apocalyptic number.

It is an amenable number.

74342989 is a deficient number, since it is larger than the sum of its proper divisors (15618419).

74342989 is a wasteful number, since it uses less digits than its factorization.

74342989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624755.

The product of its digits is 435456, while the sum is 46.

The square root of 74342989 is about 8622.2380505296. The cubic root of 74342989 is about 420.4812868968.

The spelling of 74342989 in words is "seventy-four million, three hundred forty-two thousand, nine hundred eighty-nine".