8420087 has 6 divisors (see below), whose sum is σ = 9117792. Its totient is φ = 7772232.

The previous prime is 8420051. The next prime is 8420119. The reversal of 8420087 is 7800248.

8420087 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8420087 - 2¹² = 8415991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420887) 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 in 5 ways as a sum of consecutive naturals, for example, 24743 + ... + 25080.

It is an arithmetic number, because the mean of its divisors is an integer number (1519632).

Almost surely, 2^8420087 is an apocalyptic number.

8420087 is a deficient number, since it is larger than the sum of its proper divisors (697705).

8420087 is a wasteful number, since it uses less digits than its factorization.

8420087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49849 (or 49836 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 8420087 is about 2901.7386167606. The cubic root of 8420087 is about 203.4411769286.

The spelling of 8420087 in words is "eight million, four hundred twenty thousand, eighty-seven".