7898947 has 8 divisors (see below), whose sum is σ = 9212000. Its totient is φ = 6770232.

The previous prime is 7898939. The next prime is 7898981. The reversal of 7898947 is 7498987.

It is a happy number.

It is not a de Polignac number, because 7898947 - 2³ = 7898939 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 7898894 and 7898903.

It is not an unprimeable number, because it can be changed into a prime (7898347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11172 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (1151500).

Almost surely, 2^7898947 is an apocalyptic number.

7898947 is a deficient number, since it is larger than the sum of its proper divisors (1313053).

7898947 is an equidigital number, since it uses as much as digits as its factorization.

7898947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23050 (or 23036 counting only the distinct ones).

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

The square root of 7898947 is about 2810.5065379750. The cubic root of 7898947 is about 199.1543208405.

The spelling of 7898947 in words is "seven million, eight hundred ninety-eight thousand, nine hundred forty-seven".