8978408906 has 4 divisors (see below), whose sum is σ = 13467613362. Its totient is φ = 4489204452.

The previous prime is 8978408897. The next prime is 8978408909. The reversal of 8978408906 is 6098048798.

8978408906 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 can be written as a sum of positive squares in only one way, i.e., 8969794681 + 8614225 = 94709^2 + 2935^2 .

It is a super-2 number, since 2×8978408906² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8978408909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2244602225 + ... + 2244602228.

Almost surely, 2^8978408906 is an apocalyptic number.

8978408906 is a deficient number, since it is larger than the sum of its proper divisors (4489204456).

8978408906 is a wasteful number, since it uses less digits than its factorization.

8978408906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489204455.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 8978408906 is about 94754.4664171563. The cubic root of 8978408906 is about 2078.4191101812.

The spelling of 8978408906 in words is "eight billion, nine hundred seventy-eight million, four hundred eight thousand, nine hundred six".