40964409 has 6 divisors (see below), whose sum is σ = 59170826. Its totient is φ = 27309600.

The previous prime is 40964393. The next prime is 40964411. The reversal of 40964409 is 90446904.

40964409 is a `hidden beast` number, since 4 + 0 + 9 + 644 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 4928400 = 6003^2 + 2220^2 .

It is not a de Polignac number, because 40964409 - 2⁴ = 40964393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40964419) 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 5 ways as a sum of consecutive naturals, for example, 2275792 + ... + 2275809.

Almost surely, 2^40964409 is an apocalyptic number.

It is an amenable number.

40964409 is a deficient number, since it is larger than the sum of its proper divisors (18206417).

40964409 is a wasteful number, since it uses less digits than its factorization.

40964409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551607 (or 4551604 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 40964409 is about 6400.3444438561. The cubic root of 40964409 is about 344.7219183240.

The spelling of 40964409 in words is "forty million, nine hundred sixty-four thousand, four hundred nine".