99778084 has 12 divisors (see below), whose sum is σ = 199556224. Its totient is φ = 42762024.

The previous prime is 99778061. The next prime is 99778093. The reversal of 99778084 is 48087799.

It is a happy number.

99778084 is an admirable number.

It is a super-2 number, since 2×99778084² = 19911332093422112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781724 + ... + 1781779.

Almost surely, 2^99778084 is an apocalyptic number.

It is an amenable number.

99778084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99778084 is a wasteful number, since it uses less digits than its factorization.

99778084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563514 (or 3563512 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 99778084 is about 9988.8980373212. The cubic root of 99778084 is about 463.8152814574.

The spelling of 99778084 in words is "ninety-nine million, seven hundred seventy-eight thousand, eighty-four".