74791389 has 8 divisors (see below), whose sum is σ = 99762592. Its totient is φ = 49840560.

The previous prime is 74791373. The next prime is 74791397. The reversal of 74791389 is 98319747.

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

It is not a de Polignac number, because 74791389 - 2⁴ = 74791373 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 (74791309) 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, 9234 + ... + 15324.

It is an arithmetic number, because the mean of its divisors is an integer number (12470324).

Almost surely, 2^74791389 is an apocalyptic number.

It is an amenable number.

74791389 is a deficient number, since it is larger than the sum of its proper divisors (24971203).

74791389 is a wasteful number, since it uses less digits than its factorization.

74791389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187.

The product of its digits is 381024, while the sum is 48.

The square root of 74791389 is about 8648.2014893271. The cubic root of 74791389 is about 421.3249710565.

The spelling of 74791389 in words is "seventy-four million, seven hundred ninety-one thousand, three hundred eighty-nine".