998703887 has 4 divisors (see below), whose sum is σ = 1002233160. Its totient is φ = 995174616.

The previous prime is 998703877. The next prime is 998703917. The reversal of 998703887 is 788307899.

998703887 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 is a cyclic number.

It is not a de Polignac number, because 998703887 - 2¹⁰ = 998702863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998703817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1764212 + ... + 1764777.

It is an arithmetic number, because the mean of its divisors is an integer number (250558290).

Almost surely, 2^998703887 is an apocalyptic number.

998703887 is a deficient number, since it is larger than the sum of its proper divisors (3529273).

998703887 is a wasteful number, since it uses less digits than its factorization.

998703887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529272.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The square root of 998703887 is about 31602.2766110291. The cubic root of 998703887 is about 999.5677755423.

The spelling of 998703887 in words is "nine hundred ninety-eight million, seven hundred three thousand, eight hundred eighty-seven".