999962220 has 24 divisors (see below), whose sum is σ = 2799894384. Its totient is φ = 266656576.

The previous prime is 999962209. The next prime is 999962231. The reversal of 999962220 is 22269999.

It is an interprime number because it is at equal distance from previous prime (999962209) and next prime (999962231).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 999962220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8332959 + ... + 8333078.

It is an arithmetic number, because the mean of its divisors is an integer number (116662266).

Almost surely, 2^999962220 is an apocalyptic number.

It is an amenable number.

999962220 is an abundant number, since it is smaller than the sum of its proper divisors (1799932164).

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

999962220 is a wasteful number, since it uses less digits than its factorization.

999962220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666049 (or 16666047 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 999962220 is about 31622.1792417917. The cubic root of 999962220 is about 999.9874065081.

The spelling of 999962220 in words is "nine hundred ninety-nine million, nine hundred sixty-two thousand, two hundred twenty".