4021286787 has 24 divisors (see below), whose sum is σ = 6987701760. Its totient is φ = 2176936560.

The previous prime is 4021286783. The next prime is 4021286851. The reversal of 4021286787 is 7876821204.

It is not a de Polignac number, because 4021286787 - 2² = 4021286783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4021286783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1678539 + ... + 1680932.

It is an arithmetic number, because the mean of its divisors is an integer number (291154240).

Almost surely, 2^4021286787 is an apocalyptic number.

4021286787 is a deficient number, since it is larger than the sum of its proper divisors (2966414973).

4021286787 is a wasteful number, since it uses less digits than its factorization.

4021286787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359503 (or 3359500 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 4021286787 is about 63413.6167317399. The cubic root of 4021286787 is about 1590.2119605880.

The spelling of 4021286787 in words is "four billion, twenty-one million, two hundred eighty-six thousand, seven hundred eighty-seven".