7894387 has 2 divisors, whose sum is σ = 7894388. Its totient is φ = 7894386.

The previous prime is 7894363. The next prime is 7894417. The reversal of 7894387 is 7834987.

7894387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7894387 is a prime.

It is a super-2 number, since 2×7894387² = 124642692211538, which contains 22 as substring.

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

It is not a weakly prime, because it can be changed into another prime (7894087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3947193 + 3947194.

It is an arithmetic number, because the mean of its divisors is an integer number (3947194).

Almost surely, 2^7894387 is an apocalyptic number.

7894387 is a deficient number, since it is larger than the sum of its proper divisors (1).

7894387 is an equidigital number, since it uses as much as digits as its factorization.

7894387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 7894387 is about 2809.6951791965. The cubic root of 7894387 is about 199.1159900557.

It can be divided in two parts, 7894 and 387, that added together give a square (8281 = 91²).

The spelling of 7894387 in words is "seven million, eight hundred ninety-four thousand, three hundred eighty-seven".