74603989 has 4 divisors (see below), whose sum is σ = 74641824. Its totient is φ = 74566156.

The previous prime is 74603929. The next prime is 74603999. The reversal of 74603989 is 98930647.

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 74603989 - 2¹¹ = 74601941 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 (74603909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15787 + ... + 19960.

It is an arithmetic number, because the mean of its divisors is an integer number (18660456).

Almost surely, 2^74603989 is an apocalyptic number.

It is an amenable number.

74603989 is a deficient number, since it is larger than the sum of its proper divisors (37835).

74603989 is a wasteful number, since it uses less digits than its factorization.

74603989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37834.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 74603989 is about 8637.3600712255. The cubic root of 74603989 is about 420.9727810614.

It can be divided in two parts, 7460 and 3989, that added together give a square (11449 = 107²).

The spelling of 74603989 in words is "seventy-four million, six hundred three thousand, nine hundred eighty-nine".