999968340 has 48 divisors (see below), whose sum is σ = 3199900032. Its totient is φ = 228564096.

The previous prime is 999968329. The next prime is 999968341. The reversal of 999968340 is 43869999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999968341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190019 + ... + 1190858.

It is an arithmetic number, because the mean of its divisors is an integer number (66664584).

Almost surely, 2^999968340 is an apocalyptic number.

It is an amenable number.

999968340 is an abundant number, since it is smaller than the sum of its proper divisors (2199931692).

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

999968340 is a wasteful number, since it uses less digits than its factorization.

999968340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380896 (or 2380894 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 57.

The square root of 999968340 is about 31622.2760091680. The cubic root of 999968340 is about 999.9894465553.

The spelling of 999968340 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, three hundred forty".