999447340 has 48 divisors (see below), whose sum is σ = 2230949952. Its totient is φ = 374798336.

The previous prime is 999447331. The next prime is 999447353. The reversal of 999447340 is 43744999.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83832 + ... + 95008.

It is an arithmetic number, because the mean of its divisors is an integer number (46478124).

Almost surely, 2^999447340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999447340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115474976).

999447340 is an abundant number, since it is smaller than the sum of its proper divisors (1231502612).

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

999447340 is a wasteful number, since it uses less digits than its factorization.

999447340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11466 (or 11464 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 999447340 is about 31614.0370721615. The cubic root of 999447340 is about 999.8157460526.

The spelling of 999447340 in words is "nine hundred ninety-nine million, four hundred forty-seven thousand, three hundred forty".