74976409 has 12 divisors (see below), whose sum is σ = 80308692. Its totient is φ = 69754880.

The previous prime is 74976403. The next prime is 74976437. The reversal of 74976409 is 90467947.

It can be written as a sum of positive squares in 2 ways, for example, as 68112009 + 6864400 = 8253^2 + 2620^2 .

It is not a de Polignac number, because 74976409 - 2⁹ = 74975897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74976403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291609 + ... + 291865.

It is an arithmetic number, because the mean of its divisors is an integer number (6692391).

Almost surely, 2^74976409 is an apocalyptic number.

It is an amenable number.

74976409 is a deficient number, since it is larger than the sum of its proper divisors (5332283).

74976409 is a wasteful number, since it uses less digits than its factorization.

74976409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 74976409 is about 8658.8919037022. The cubic root of 74976409 is about 421.6721115251.

The spelling of 74976409 in words is "seventy-four million, nine hundred seventy-six thousand, four hundred nine".