39862489 has 2 divisors, whose sum is σ = 39862490. Its totient is φ = 39862488.

The previous prime is 39862483. The next prime is 39862523. The reversal of 39862489 is 98426893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34987225 + 4875264 = 5915^2 + 2208^2 .

It is an emirp because it is prime and its reverse (98426893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39862489 - 2³ = 39862481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39862481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19931244 + 19931245.

It is an arithmetic number, because the mean of its divisors is an integer number (19931245).

Almost surely, 2^39862489 is an apocalyptic number.

It is an amenable number.

39862489 is a deficient number, since it is larger than the sum of its proper divisors (1).

39862489 is an equidigital number, since it uses as much as digits as its factorization.

39862489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 39862489 is about 6313.6747619750. The cubic root of 39862489 is about 341.6028385494.

The spelling of 39862489 in words is "thirty-nine million, eight hundred sixty-two thousand, four hundred eighty-nine".