74887489 has 4 divisors (see below), whose sum is σ = 75614656. Its totient is φ = 74160324.

The previous prime is 74887457. The next prime is 74887507. The reversal of 74887489 is 98478847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74887489 - 2⁵ = 74887457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74887789) 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, 363429 + ... + 363634.

It is an arithmetic number, because the mean of its divisors is an integer number (18903664).

Almost surely, 2^74887489 is an apocalyptic number.

It is an amenable number.

74887489 is a deficient number, since it is larger than the sum of its proper divisors (727167).

74887489 is a wasteful number, since it uses less digits than its factorization.

74887489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727166.

The product of its digits is 3612672, while the sum is 55.

The square root of 74887489 is about 8653.7557742289. The cubic root of 74887489 is about 421.5053483296.

The spelling of 74887489 in words is "seventy-four million, eight hundred eighty-seven thousand, four hundred eighty-nine".