74916889 has 4 divisors (see below), whose sum is σ = 77500260. Its totient is φ = 72333520.

The previous prime is 74916871. The next prime is 74916893. The reversal of 74916889 is 98861947.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34810000 + 40106889 = 5900^2 + 6333^2 .

It is a cyclic number.

It is not a de Polignac number, because 74916889 - 2⁹ = 74916377 is a prime.

It is a super-2 number, since 2×74916889² = 11225080514876642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74916839) 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, 1291642 + ... + 1291699.

It is an arithmetic number, because the mean of its divisors is an integer number (19375065).

Almost surely, 2^74916889 is an apocalyptic number.

It is an amenable number.

74916889 is a deficient number, since it is larger than the sum of its proper divisors (2583371).

74916889 is a wasteful number, since it uses less digits than its factorization.

74916889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583370.

The product of its digits is 870912, while the sum is 52.

The square root of 74916889 is about 8655.4542919479. The cubic root of 74916889 is about 421.5605005590.

The spelling of 74916889 in words is "seventy-four million, nine hundred sixteen thousand, eight hundred eighty-nine".