74132869 has 4 divisors (see below), whose sum is σ = 78493644. Its totient is φ = 69772096.

The previous prime is 74132857. The next prime is 74132881. The reversal of 74132869 is 96823147.

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

It is an interprime number because it is at equal distance from previous prime (74132857) and next prime (74132881).

It can be written as a sum of positive squares in 2 ways, for example, as 27688644 + 46444225 = 5262^2 + 6815^2 .

It is a cyclic number.

It is not a de Polignac number, because 74132869 - 2⁵ = 74132837 is a prime.

It is a super-2 number, since 2×74132869² = 10991364532342322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74132819) 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, 2180362 + ... + 2180395.

It is an arithmetic number, because the mean of its divisors is an integer number (19623411).

Almost surely, 2^74132869 is an apocalyptic number.

It is an amenable number.

74132869 is a deficient number, since it is larger than the sum of its proper divisors (4360775).

74132869 is a wasteful number, since it uses less digits than its factorization.

74132869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360774.

The product of its digits is 72576, while the sum is 40.

The square root of 74132869 is about 8610.0446572593. The cubic root of 74132869 is about 420.0847693598.

The spelling of 74132869 in words is "seventy-four million, one hundred thirty-two thousand, eight hundred sixty-nine".