7894774987 has 16 divisors (see below), whose sum is σ = 9123552000. Its totient is φ = 6755991840.

The previous prime is 7894774973. The next prime is 7894775023.

7894774987 is nontrivially palindromic in base 10.

7894774987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7894774987 - 2⁷ = 7894774859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7894774187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87487 + ... + 153112.

It is an arithmetic number, because the mean of its divisors is an integer number (570222000).

Almost surely, 2^7894774987 is an apocalyptic number.

7894774987 is a deficient number, since it is larger than the sum of its proper divisors (1228777013).

7894774987 is a wasteful number, since it uses less digits than its factorization.

7894774987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240786.

The product of its digits is 199148544, while the sum is 70.

The square root of 7894774987 is about 88852.5463169177. The cubic root of 7894774987 is about 1991.1925199990.

The spelling of 7894774987 in words is "seven billion, eight hundred ninety-four million, seven hundred seventy-four thousand, nine hundred eighty-seven".