40382815939 has 4 divisors (see below), whose sum is σ = 40383978624. Its totient is φ = 40381653256.

The previous prime is 40382815901. The next prime is 40382815969. The reversal of 40382815939 is 93951828304.

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

It is a cyclic number.

It is not a de Polignac number, because 40382815939 - 2²⁷ = 40248598211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40382815969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527587 + ... + 599260.

It is an arithmetic number, because the mean of its divisors is an integer number (10095994656).

Almost surely, 2^40382815939 is an apocalyptic number.

40382815939 is a deficient number, since it is larger than the sum of its proper divisors (1162685).

40382815939 is a wasteful number, since it uses less digits than its factorization.

40382815939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162684.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 40382815939 in words is "forty billion, three hundred eighty-two million, eight hundred fifteen thousand, nine hundred thirty-nine".