9778898 has 8 divisors (see below), whose sum is σ = 14682060. Its totient is φ = 4884880.

The previous prime is 9778897. The next prime is 9778913. The reversal of 9778898 is 8988779.

9778898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9591409 + 187489 = 3097^2 + 433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (9778891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988 + ... + 4848.

Almost surely, 2^9778898 is an apocalyptic number.

9778898 is a deficient number, since it is larger than the sum of its proper divisors (4903162).

9778898 is a wasteful number, since it uses less digits than its factorization.

9778898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572.

The product of its digits is 2032128, while the sum is 56.

The square root of 9778898 is about 3127.1229588873. The cubic root of 9778898 is about 213.8437879407.

The spelling of 9778898 in words is "nine million, seven hundred seventy-eight thousand, eight hundred ninety-eight".