978199883 has 4 divisors (see below), whose sum is σ = 990582240. Its totient is φ = 965817528.

The previous prime is 978199829. The next prime is 978199889. The reversal of 978199883 is 388991879.

978199883 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 978199883 - 2⁸ = 978199627 is a prime.

It is a super-2 number, since 2×978199883² = 1913750022202427378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978199889) 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, 6191060 + ... + 6191217.

It is an arithmetic number, because the mean of its divisors is an integer number (247645560).

Almost surely, 2^978199883 is an apocalyptic number.

978199883 is a deficient number, since it is larger than the sum of its proper divisors (12382357).

978199883 is a wasteful number, since it uses less digits than its factorization.

978199883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382356.

The product of its digits is 7838208, while the sum is 62.

The square root of 978199883 is about 31276.1871557260. The cubic root of 978199883 is about 992.6798403456.

The spelling of 978199883 in words is "nine hundred seventy-eight million, one hundred ninety-nine thousand, eight hundred eighty-three".