74540849 has 4 divisors (see below), whose sum is σ = 75224820. Its totient is φ = 73856880.

The previous prime is 74540831. The next prime is 74540867. The reversal of 74540849 is 94804547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94804547 = 19 ⋅4989713.

It is an interprime number because it is at equal distance from previous prime (74540831) and next prime (74540867).

It can be written as a sum of positive squares in 2 ways, for example, as 56325025 + 18215824 = 7505^2 + 4268^2 .

It is a cyclic number.

It is not a de Polignac number, because 74540849 - 2⁸ = 74540593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74540549) 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, 341822 + ... + 342039.

It is an arithmetic number, because the mean of its divisors is an integer number (18806205).

Almost surely, 2^74540849 is an apocalyptic number.

It is an amenable number.

74540849 is a deficient number, since it is larger than the sum of its proper divisors (683971).

74540849 is a wasteful number, since it uses less digits than its factorization.

74540849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683970.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 74540849 is about 8633.7042455715. The cubic root of 74540849 is about 420.8539861467.

The spelling of 74540849 in words is "seventy-four million, five hundred forty thousand, eight hundred forty-nine".