39928873 has 2 divisors, whose sum is σ = 39928874. Its totient is φ = 39928872.

The previous prime is 39928843. The next prime is 39928879. The reversal of 39928873 is 37882993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31214569 + 8714304 = 5587^2 + 2952^2 .

It is a cyclic number.

It is not a de Polignac number, because 39928873 - 2⁵ = 39928841 is a prime.

It is not a weakly prime, because it can be changed into another prime (39928879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19964436 + 19964437.

It is an arithmetic number, because the mean of its divisors is an integer number (19964437).

Almost surely, 2^39928873 is an apocalyptic number.

It is an amenable number.

39928873 is a deficient number, since it is larger than the sum of its proper divisors (1).

39928873 is an equidigital number, since it uses as much as digits as its factorization.

39928873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 39928873 is about 6318.9297353270. The cubic root of 39928873 is about 341.7923599672.

The spelling of 39928873 in words is "thirty-nine million, nine hundred twenty-eight thousand, eight hundred seventy-three".