74389999 has 8 divisors (see below), whose sum is σ = 75625472. Its totient is φ = 73164600.

The previous prime is 74389969. The next prime is 74390039. The reversal of 74389999 is 99998347.

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 74389999 - 2⁵ = 74389967 is a prime.

It is a Duffinian number.

74389999 is a modest number, since divided by 9999 gives 7438 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74389969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13162 + ... + 17944.

It is an arithmetic number, because the mean of its divisors is an integer number (9453184).

Almost surely, 2^74389999 is an apocalyptic number.

74389999 is a deficient number, since it is larger than the sum of its proper divisors (1235473).

74389999 is a wasteful number, since it uses less digits than its factorization.

74389999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037.

The product of its digits is 4408992, while the sum is 58.

The square root of 74389999 is about 8624.9637100686. The cubic root of 74389999 is about 420.5698971817.

The spelling of 74389999 in words is "seventy-four million, three hundred eighty-nine thousand, nine hundred ninety-nine".