999601200 has 540 divisors, whose sum is σ = 3950586432. Its totient is φ = 233625600.

The previous prime is 999601189. The next prime is 999601201. The reversal of 999601200 is 2106999.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (999601201) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 18860374 + ... + 18860426.

Almost surely, 2^999601200 is an apocalyptic number.

999601200 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999601200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975293216).

999601200 is an abundant number, since it is smaller than the sum of its proper divisors (2950985232).

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

999601200 is a wasteful number, since it uses less digits than its factorization.

999601200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 999601200 is about 31616.4703912375. The cubic root of 999601200 is about 999.8670489915.

The spelling of 999601200 in words is "nine hundred ninety-nine million, six hundred one thousand, two hundred".