74427919 has 4 divisors (see below), whose sum is σ = 74884696. Its totient is φ = 73971144.

The previous prime is 74427917. The next prime is 74427923. The reversal of 74427919 is 91972447.

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

It is a cyclic number.

It is not a de Polignac number, because 74427919 - 2¹ = 74427917 is a prime.

It is a super-3 number, since 3×74427919³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74427917) 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, 228144 + ... + 228469.

It is an arithmetic number, because the mean of its divisors is an integer number (18721174).

Almost surely, 2^74427919 is an apocalyptic number.

74427919 is a deficient number, since it is larger than the sum of its proper divisors (456777).

74427919 is a wasteful number, since it uses less digits than its factorization.

74427919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456776.

The product of its digits is 127008, while the sum is 43.

The square root of 74427919 is about 8627.1617001190. The cubic root of 74427919 is about 420.6413463087.

The spelling of 74427919 in words is "seventy-four million, four hundred twenty-seven thousand, nine hundred nineteen".