74454947 has 4 divisors (see below), whose sum is σ = 85091376. Its totient is φ = 63818520.

The previous prime is 74454923. The next prime is 74454949. The reversal of 74454947 is 74945447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74945447 = 3761 ⋅19927.

It is a cyclic number.

It is not a de Polignac number, because 74454947 - 2²⁰ = 73406371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74454898 and 74454907.

It is not an unprimeable number, because it can be changed into a prime (74454949) 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, 5318204 + ... + 5318217.

It is an arithmetic number, because the mean of its divisors is an integer number (21272844).

Almost surely, 2^74454947 is an apocalyptic number.

74454947 is a deficient number, since it is larger than the sum of its proper divisors (10636429).

74454947 is a wasteful number, since it uses less digits than its factorization.

74454947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10636428.

The product of its digits is 564480, while the sum is 44.

The square root of 74454947 is about 8628.7280059114. The cubic root of 74454947 is about 420.6922578418.

The spelling of 74454947 in words is "seventy-four million, four hundred fifty-four thousand, nine hundred forty-seven".