39986413 has 2 divisors, whose sum is σ = 39986414. Its totient is φ = 39986412.

The previous prime is 39986383. The next prime is 39986449. The reversal of 39986413 is 31468993.

39986413 is nontrivially palindromic in base 14.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39980329 + 6084 = 6323^2 + 78^2 .

It is an emirp because it is prime and its reverse (31468993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39986413 - 2¹³ = 39978221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39986413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39986113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19993206 + 19993207.

It is an arithmetic number, because the mean of its divisors is an integer number (19993207).

Almost surely, 2^39986413 is an apocalyptic number.

It is an amenable number.

39986413 is a deficient number, since it is larger than the sum of its proper divisors (1).

39986413 is an equidigital number, since it uses as much as digits as its factorization.

39986413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 39986413 is about 6323.4810824419. The cubic root of 39986413 is about 341.9564625449.

The spelling of 39986413 in words is "thirty-nine million, nine hundred eighty-six thousand, four hundred thirteen".