7894987 has 16 divisors (see below), whose sum is σ = 8792064. Its totient is φ = 7056000.

The previous prime is 7894981. The next prime is 7894993.

It is a happy number.

7894987 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (7894981) and next prime (7894993).

It is a cyclic number.

It is not a de Polignac number, because 7894987 - 2¹¹ = 7892939 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7894981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37312 + ... + 37522.

It is an arithmetic number, because the mean of its divisors is an integer number (549504).

Almost surely, 2^7894987 is an apocalyptic number.

7894987 is a deficient number, since it is larger than the sum of its proper divisors (897077).

7894987 is a wasteful number, since it uses less digits than its factorization.

7894987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330.

The product of its digits is 1016064, while the sum is 52.

The square root of 7894987 is about 2809.8019503161. The cubic root of 7894987 is about 199.1210344232.

It can be divided in two parts, 7894 and 987, that multiplied together give a triangular number (7791378 = T₃₉₄₇).

The spelling of 7894987 in words is "seven million, eight hundred ninety-four thousand, nine hundred eighty-seven".