39873949 has 2 divisors, whose sum is σ = 39873950. Its totient is φ = 39873948.

The previous prime is 39873941. The next prime is 39873979. The reversal of 39873949 is 94937893.

39873949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23833924 + 16040025 = 4882^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 39873949 - 2³ = 39873941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39873896 and 39873905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39873941) 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 as a sum of consecutive naturals, namely, 19936974 + 19936975.

It is an arithmetic number, because the mean of its divisors is an integer number (19936975).

Almost surely, 2^39873949 is an apocalyptic number.

It is an amenable number.

39873949 is a deficient number, since it is larger than the sum of its proper divisors (1).

39873949 is an equidigital number, since it uses as much as digits as its factorization.

39873949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 39873949 is about 6314.5822506323. The cubic root of 39873949 is about 341.6355710216.

It can be divided in two parts, 398 and 73949, that added together give a palindrome (74347).

The spelling of 39873949 in words is "thirty-nine million, eight hundred seventy-three thousand, nine hundred forty-nine".