74489471 has 4 divisors (see below), whose sum is σ = 85130832. Its totient is φ = 63848112.

The previous prime is 74489381. The next prime is 74489489. The reversal of 74489471 is 17498447.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74489471 is a prime.

It is a super-3 number, since 3×74489471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74489491) 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, 5320670 + ... + 5320683.

It is an arithmetic number, because the mean of its divisors is an integer number (21282708).

Almost surely, 2^74489471 is an apocalyptic number.

74489471 is a deficient number, since it is larger than the sum of its proper divisors (10641361).

74489471 is a wasteful number, since it uses less digits than its factorization.

74489471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10641360.

The product of its digits is 225792, while the sum is 44.

The square root of 74489471 is about 8630.7283006708. The cubic root of 74489471 is about 420.7572713648.

The spelling of 74489471 in words is "seventy-four million, four hundred eighty-nine thousand, four hundred seventy-one".