74840479 has 8 divisors (see below), whose sum is σ = 88291328. Its totient is φ = 62079480.

The previous prime is 74840453. The next prime is 74840483. The reversal of 74840479 is 97404847.

It is a happy number.

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 74840479 - 2¹³ = 74832287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74840489) 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, 172227 + ... + 172660.

It is an arithmetic number, because the mean of its divisors is an integer number (11036416).

Almost surely, 2^74840479 is an apocalyptic number.

74840479 is a deficient number, since it is larger than the sum of its proper divisors (13450849).

74840479 is a wasteful number, since it uses less digits than its factorization.

74840479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344925.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 74840479 is about 8651.0391861325. The cubic root of 74840479 is about 421.4171310392.

The spelling of 74840479 in words is "seventy-four million, eight hundred forty thousand, four hundred seventy-nine".