999814960 has 80 divisors (see below), whose sum is σ = 2468993760. Its totient is φ = 375459840.

The previous prime is 999814951. The next prime is 999814967. The reversal of 999814960 is 69418999.

999814960 = T₂₅₈₁₆ + T₂₅₈₁₇ + T₂₅₈₁₈.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (999814967) 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 15 ways as a sum of consecutive naturals, for example, 168850 + ... + 174670.

It is an arithmetic number, because the mean of its divisors is an integer number (30862422).

Almost surely, 2^999814960 is an apocalyptic number.

999814960 is the 25818-th centered triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999814960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234496880).

999814960 is an abundant number, since it is smaller than the sum of its proper divisors (1469178800).

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

999814960 is a wasteful number, since it uses less digits than its factorization.

999814960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966 (or 5960 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 999814960 is about 31619.8507270354. The cubic root of 999814960 is about 999.9383161952.

The spelling of 999814960 in words is "nine hundred ninety-nine million, eight hundred fourteen thousand, nine hundred sixty".