9999814 has 32 divisors (see below), whose sum is σ = 17625600. Its totient is φ = 4206240.

The previous prime is 9999761. The next prime is 9999823. The reversal of 9999814 is 4189999.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19392 + ... + 19900.

It is an arithmetic number, because the mean of its divisors is an integer number (550800).

Almost surely, 2^9999814 is an apocalyptic number.

9999814 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

9999814 is a deficient number, since it is larger than the sum of its proper divisors (7625786).

9999814 is a wasteful number, since it uses less digits than its factorization.

9999814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its digits is 209952, while the sum is 49.

The square root of 9999814 is about 3162.2482508494. The cubic root of 9999814 is about 215.4421332454.

The spelling of 9999814 in words is "nine million, nine hundred ninety-nine thousand, eight hundred fourteen".