74129889 has 8 divisors (see below), whose sum is σ = 99015840. Its totient is φ = 49331936.

The previous prime is 74129863. The next prime is 74129917. The reversal of 74129889 is 98892147.

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 74129889 - 2⁷ = 74129761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74124889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20007 + ... + 23420.

It is an arithmetic number, because the mean of its divisors is an integer number (12376980).

Almost surely, 2^74129889 is an apocalyptic number.

It is an amenable number.

74129889 is a deficient number, since it is larger than the sum of its proper divisors (24885951).

74129889 is a wasteful number, since it uses less digits than its factorization.

74129889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43999.

The product of its digits is 290304, while the sum is 48.

The square root of 74129889 is about 8609.8716018301. The cubic root of 74129889 is about 420.0791404155.

The spelling of 74129889 in words is "seventy-four million, one hundred twenty-nine thousand, eight hundred eighty-nine".