9089090978 has 8 divisors (see below), whose sum is σ = 14873058000. Its totient is φ = 4131404980.

The previous prime is 9089090963. The next prime is 9089091007. The reversal of 9089090978 is 8790909809.

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

It is a super-2 number, since 2×9089090978² (a number of 21 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 206570228 + ... + 206570271.

It is an arithmetic number, because the mean of its divisors is an integer number (1859132250).

Almost surely, 2^9089090978 is an apocalyptic number.

9089090978 is a deficient number, since it is larger than the sum of its proper divisors (5783967022).

9089090978 is a wasteful number, since it uses less digits than its factorization.

9089090978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413140512.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 9089090978 is about 95336.7241832863. The cubic root of 9089090978 is about 2086.9248808189.

The spelling of 9089090978 in words is "nine billion, eighty-nine million, ninety thousand, nine hundred seventy-eight".