74889447 has 8 divisors (see below), whose sum is σ = 100571520. Its totient is φ = 49566840.

The previous prime is 74889439. The next prime is 74889457. The reversal of 74889447 is 74498847.

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

It is not a de Polignac number, because 74889447 - 2³ = 74889439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74889447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74889427) 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, 89379 + ... + 90212.

It is an arithmetic number, because the mean of its divisors is an integer number (12571440).

Almost surely, 2^74889447 is an apocalyptic number.

74889447 is a deficient number, since it is larger than the sum of its proper divisors (25682073).

74889447 is a wasteful number, since it uses less digits than its factorization.

74889447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179733.

The product of its digits is 1806336, while the sum is 51.

The square root of 74889447 is about 8653.8689035598. The cubic root of 74889447 is about 421.5090218417.

The spelling of 74889447 in words is "seventy-four million, eight hundred eighty-nine thousand, four hundred forty-seven".