74452409 has 8 divisors (see below), whose sum is σ = 75243168. Its totient is φ = 73665280.

The previous prime is 74452387. The next prime is 74452451. The reversal of 74452409 is 90425447.

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

It is a cyclic number.

It is not a de Polignac number, because 74452409 - 2¹² = 74448313 is a prime.

It is a super-2 number, since 2×74452409² = 11086322411806562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74452459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60569 + ... + 61785.

It is an arithmetic number, because the mean of its divisors is an integer number (9405396).

Almost surely, 2^74452409 is an apocalyptic number.

It is an amenable number.

74452409 is a deficient number, since it is larger than the sum of its proper divisors (790759).

74452409 is a wasteful number, since it uses less digits than its factorization.

74452409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 74452409 is about 8628.5809377904. The cubic root of 74452409 is about 420.6874776397.

The spelling of 74452409 in words is "seventy-four million, four hundred fifty-two thousand, four hundred nine".