74009569 has 4 divisors (see below), whose sum is σ = 74030896. Its totient is φ = 73988244.

The previous prime is 74009567. The next prime is 74009591. The reversal of 74009569 is 96590047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74009569 - 2¹ = 74009567 is a prime.

It is a super-2 number, since 2×74009569² = 10954832607131522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74009567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4119 + ... + 12844.

It is an arithmetic number, because the mean of its divisors is an integer number (18507724).

Almost surely, 2^74009569 is an apocalyptic number.

It is an amenable number.

74009569 is a deficient number, since it is larger than the sum of its proper divisors (21327).

74009569 is a wasteful number, since it uses less digits than its factorization.

74009569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21326.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 74009569 is about 8602.8814358911. The cubic root of 74009569 is about 419.8517409439.

The spelling of 74009569 in words is "seventy-four million, nine thousand, five hundred sixty-nine".