39877213 has 2 divisors, whose sum is σ = 39877214. Its totient is φ = 39877212.

The previous prime is 39877207. The next prime is 39877217. The reversal of 39877213 is 31277893.

39877213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32684089 + 7193124 = 5717^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 39877213 - 2⁹ = 39876701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39877217) 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, 19938606 + 19938607.

It is an arithmetic number, because the mean of its divisors is an integer number (19938607).

Almost surely, 2^39877213 is an apocalyptic number.

It is an amenable number.

39877213 is a deficient number, since it is larger than the sum of its proper divisors (1).

39877213 is an equidigital number, since it uses as much as digits as its factorization.

39877213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 39877213 is about 6314.8406947444. The cubic root of 39877213 is about 341.6448926305.

The spelling of 39877213 in words is "thirty-nine million, eight hundred seventy-seven thousand, two hundred thirteen".