40938817 has 4 divisors (see below), whose sum is σ = 42259456. Its totient is φ = 39618180.

The previous prime is 40938797. The next prime is 40938829. The reversal of 40938817 is 71883904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40938817 - 2¹⁵ = 40906049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40938817.

It is not an unprimeable number, because it can be changed into a prime (40938847) 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 3 ways as a sum of consecutive naturals, for example, 660273 + ... + 660334.

It is an arithmetic number, because the mean of its divisors is an integer number (10564864).

Almost surely, 2^40938817 is an apocalyptic number.

It is an amenable number.

40938817 is a deficient number, since it is larger than the sum of its proper divisors (1320639).

40938817 is a wasteful number, since it uses less digits than its factorization.

40938817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320638.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 40938817 is about 6398.3448641035. The cubic root of 40938817 is about 344.6501164733.

It can be divided in two parts, 409388 and 17, that multiplied together give a palindrome (6959596).

The spelling of 40938817 in words is "forty million, nine hundred thirty-eight thousand, eight hundred seventeen".