7890898 has 4 divisors (see below), whose sum is σ = 11836350. Its totient is φ = 3945448.

The previous prime is 7890881. The next prime is 7890913. The reversal of 7890898 is 8980987.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5276209 + 2614689 = 2297^2 + 1617^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1972723 + ... + 1972726.

Almost surely, 2^7890898 is an apocalyptic number.

7890898 is a deficient number, since it is larger than the sum of its proper divisors (3945452).

7890898 is a wasteful number, since it uses less digits than its factorization.

7890898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945451.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 7890898 is about 2809.0742247224. The cubic root of 7890898 is about 199.0866519931.

The spelling of 7890898 in words is "seven million, eight hundred ninety thousand, eight hundred ninety-eight".