7947898 has 12 divisors (see below), whose sum is σ = 13868442. Its totient is φ = 3406200.

The previous prime is 7947869. The next prime is 7947899. The reversal of 7947898 is 8987497.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5968249 + 1979649 = 2443^2 + 1407^2 .

It is not an unprimeable number, because it can be changed into a prime (7947899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40453 + ... + 40648.

Almost surely, 2^7947898 is an apocalyptic number.

7947898 is a deficient number, since it is larger than the sum of its proper divisors (5920544).

7947898 is a wasteful number, since it uses less digits than its factorization.

7947898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81117 (or 81110 counting only the distinct ones).

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

The square root of 7947898 is about 2819.2016600449. The cubic root of 7947898 is about 199.5648706655.

The spelling of 7947898 in words is "seven million, nine hundred forty-seven thousand, eight hundred ninety-eight".