40382513 has 4 divisors (see below), whose sum is σ = 40440180. Its totient is φ = 40324848.

The previous prime is 40382431. The next prime is 40382521. The reversal of 40382513 is 31528304.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4765489 + 35617024 = 2183^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 40382513 - 2¹⁰ = 40381489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40382113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27770 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (10110045).

Almost surely, 2^40382513 is an apocalyptic number.

It is an amenable number.

40382513 is a deficient number, since it is larger than the sum of its proper divisors (57667).

40382513 is an equidigital number, since it uses as much as digits as its factorization.

40382513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57666.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40382513 is about 6354.7236761326. The cubic root of 40382513 is about 343.0818794346.

The spelling of 40382513 in words is "forty million, three hundred eighty-two thousand, five hundred thirteen".