74471279 has 4 divisors (see below), whose sum is σ = 78390840. Its totient is φ = 70551720.

The previous prime is 74471249. The next prime is 74471291. The reversal of 74471279 is 97217447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97217447 = 839 ⋅115873.

It is a cyclic number.

It is not a de Polignac number, because 74471279 - 2²⁰ = 73422703 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 (74471249) 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, 1959752 + ... + 1959789.

It is an arithmetic number, because the mean of its divisors is an integer number (19597710).

Almost surely, 2^74471279 is an apocalyptic number.

74471279 is a deficient number, since it is larger than the sum of its proper divisors (3919561).

74471279 is a wasteful number, since it uses less digits than its factorization.

74471279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919560.

The product of its digits is 98784, while the sum is 41.

The square root of 74471279 is about 8629.6743275746. The cubic root of 74471279 is about 420.7230157875.

The spelling of 74471279 in words is "seventy-four million, four hundred seventy-one thousand, two hundred seventy-nine".