39504893 has 2 divisors, whose sum is σ = 39504894. Its totient is φ = 39504892.

The previous prime is 39504877. The next prime is 39504973. The reversal of 39504893 is 39840593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28922884 + 10582009 = 5378^2 + 3253^2 .

It is a cyclic number.

It is not a de Polignac number, because 39504893 - 2⁴ = 39504877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39504893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39504833) 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 as a sum of consecutive naturals, namely, 19752446 + 19752447.

It is an arithmetic number, because the mean of its divisors is an integer number (19752447).

Almost surely, 2^39504893 is an apocalyptic number.

It is an amenable number.

39504893 is a deficient number, since it is larger than the sum of its proper divisors (1).

39504893 is an equidigital number, since it uses as much as digits as its factorization.

39504893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 39504893 is about 6285.2917991132. The cubic root of 39504893 is about 340.5782920889.

The spelling of 39504893 in words is "thirty-nine million, five hundred four thousand, eight hundred ninety-three".