74393887 has 8 divisors (see below), whose sum is σ = 79002000. Its totient is φ = 69811584.

The previous prime is 74393881. The next prime is 74393897. The reversal of 74393887 is 78839347.

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 74393887 - 2¹¹ = 74391839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74393887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74393881) 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, 337 + ... + 12202.

It is an arithmetic number, because the mean of its divisors is an integer number (9875250).

Almost surely, 2^74393887 is an apocalyptic number.

74393887 is a deficient number, since it is larger than the sum of its proper divisors (4608113).

74393887 is a wasteful number, since it uses less digits than its factorization.

74393887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905.

The product of its digits is 1016064, while the sum is 49.

The square root of 74393887 is about 8625.1890993763. The cubic root of 74393887 is about 420.5772240953.

The spelling of 74393887 in words is "seventy-four million, three hundred ninety-three thousand, eight hundred eighty-seven".