39400873 has 2 divisors, whose sum is σ = 39400874. Its totient is φ = 39400872.

The previous prime is 39400871. The next prime is 39400903. The reversal of 39400873 is 37800493.

39400873 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., 39400729 + 144 = 6277^2 + 12^2 .

It is an emirp because it is prime and its reverse (37800493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39400873 - 2¹ = 39400871 is a prime.

Together with 39400871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39400871) 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, 19700436 + 19700437.

It is an arithmetic number, because the mean of its divisors is an integer number (19700437).

Almost surely, 2^39400873 is an apocalyptic number.

It is an amenable number.

39400873 is a deficient number, since it is larger than the sum of its proper divisors (1).

39400873 is an equidigital number, since it uses as much as digits as its factorization.

39400873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 39400873 is about 6277.0114704372. The cubic root of 39400873 is about 340.2791047313.

The spelling of 39400873 in words is "thirty-nine million, four hundred thousand, eight hundred seventy-three".