39997286 has 16 divisors (see below), whose sum is σ = 68700960. Its totient is φ = 17108160.

The previous prime is 39997249. The next prime is 39997289. The reversal of 39997286 is 68279993.

39997286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39997289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5456 + ... + 10476.

It is an arithmetic number, because the mean of its divisors is an integer number (4293810).

Almost surely, 2^39997286 is an apocalyptic number.

39997286 is a deficient number, since it is larger than the sum of its proper divisors (28703674).

39997286 is a wasteful number, since it uses less digits than its factorization.

39997286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599.

The product of its digits is 1469664, while the sum is 53.

The square root of 39997286 is about 6324.3407561579. The cubic root of 39997286 is about 341.9874543692.

The spelling of 39997286 in words is "thirty-nine million, nine hundred ninety-seven thousand, two hundred eighty-six".