74440221 has 8 divisors (see below), whose sum is σ = 100181664. Its totient is φ = 49162800.

The previous prime is 74440169. The next prime is 74440237. The reversal of 74440221 is 12204447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74440221 - 2⁹ = 74439709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74440191 and 74440200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74440291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115630 + ... + 116271.

It is an arithmetic number, because the mean of its divisors is an integer number (12522708).

Almost surely, 2^74440221 is an apocalyptic number.

It is an amenable number.

74440221 is a deficient number, since it is larger than the sum of its proper divisors (25741443).

74440221 is a wasteful number, since it uses less digits than its factorization.

74440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232011.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 74440221 is about 8627.8746513843. The cubic root of 74440221 is about 420.6645206087.

Adding to 74440221 its reverse (12204447), we get a palindrome (86644668).

The spelling of 74440221 in words is "seventy-four million, four hundred forty thousand, two hundred twenty-one".