74045447 has 4 divisors (see below), whose sum is σ = 84623376. Its totient is φ = 63467520.

The previous prime is 74045437. The next prime is 74045459. The reversal of 74045447 is 74454047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74454047 = 59 ⋅1261933.

It is a cyclic number.

It is not a de Polignac number, because 74045447 - 2⁴ = 74045431 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 (74045437) 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, 5288954 + ... + 5288967.

It is an arithmetic number, because the mean of its divisors is an integer number (21155844).

Almost surely, 2^74045447 is an apocalyptic number.

74045447 is a deficient number, since it is larger than the sum of its proper divisors (10577929).

74045447 is a wasteful number, since it uses less digits than its factorization.

74045447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10577928.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 74045447 is about 8604.9664148095. The cubic root of 74045447 is about 419.9195745475.

The spelling of 74045447 in words is "seventy-four million, forty-five thousand, four hundred forty-seven".