8938778398 has 32 divisors (see below), whose sum is σ = 15523073280. Its totient is φ = 3815295360.

The previous prime is 8938778393. The next prime is 8938778491.

8938778398 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8938778393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136965 + ... + 191407.

It is an arithmetic number, because the mean of its divisors is an integer number (485096040).

Almost surely, 2^8938778398 is an apocalyptic number.

8938778398 is a deficient number, since it is larger than the sum of its proper divisors (6584294882).

8938778398 is a wasteful number, since it uses less digits than its factorization.

8938778398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54912.

The product of its digits is 146313216, while the sum is 70.

The square root of 8938778398 is about 94545.1130307643. The cubic root of 8938778398 is about 2075.3565670108.

The spelling of 8938778398 in words is "eight billion, nine hundred thirty-eight million, seven hundred seventy-eight thousand, three hundred ninety-eight".