40048817 has 2 divisors, whose sum is σ = 40048818. Its totient is φ = 40048816.

The previous prime is 40048777. The next prime is 40048847. The reversal of 40048817 is 71884004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27081616 + 12967201 = 5204^2 + 3601^2 .

It is a cyclic number.

It is not a de Polignac number, because 40048817 - 2¹² = 40044721 is a prime.

It is not a weakly prime, because it can be changed into another prime (40048847) 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 as a sum of consecutive naturals, namely, 20024408 + 20024409.

It is an arithmetic number, because the mean of its divisors is an integer number (20024409).

Almost surely, 2^40048817 is an apocalyptic number.

It is an amenable number.

40048817 is a deficient number, since it is larger than the sum of its proper divisors (1).

40048817 is an equidigital number, since it uses as much as digits as its factorization.

40048817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 40048817 is about 6328.4134662647. The cubic root of 40048817 is about 342.1342592688.

It can be divided in two parts, 4004 and 8817, that added together give a palindrome (12821).

The spelling of 40048817 in words is "forty million, forty-eight thousand, eight hundred seventeen".