99887776 has 12 divisors (see below), whose sum is σ = 196654122. Its totient is φ = 49943872.

The previous prime is 99887771. The next prime is 99887779. The reversal of 99887776 is 67778899.

It can be written as a sum of positive squares in only one way, i.e., 79637776 + 20250000 = 8924^2 + 4500^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99887771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560715 + ... + 1560778.

Almost surely, 2^99887776 is an apocalyptic number.

It is an amenable number.

99887776 is a deficient number, since it is larger than the sum of its proper divisors (96766346).

99887776 is a wasteful number, since it uses less digits than its factorization.

99887776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121503 (or 3121495 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 61.

The square root of 99887776 is about 9994.3872248377. The cubic root of 99887776 is about 463.9851858132.

The spelling of 99887776 in words is "ninety-nine million, eight hundred eighty-seven thousand, seven hundred seventy-six".