99940000287 has 32 divisors (see below), whose sum is σ = 139320631296. Its totient is φ = 63649548000.

The previous prime is 99940000267. The next prime is 99940000289. The reversal of 99940000287 is 78200004999.

It is a happy number.

It is not a de Polignac number, because 99940000287 - 2¹⁶ = 99939934751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99940000289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11195808 + ... + 11204730.

It is an arithmetic number, because the mean of its divisors is an integer number (4353769728).

Almost surely, 2^99940000287 is an apocalyptic number.

99940000287 is a deficient number, since it is larger than the sum of its proper divisors (39380631009).

99940000287 is a wasteful number, since it uses less digits than its factorization.

99940000287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10491.

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 99940000287 in words is "ninety-nine billion, nine hundred forty million, two hundred eighty-seven", and thus it is an aban number.