1199900 has 54 divisors (see below), whose sum is σ = 2859192. Its totient is φ = 436800.

The previous prime is 1199899. The next prime is 1199909. The reversal of 1199900 is 99911.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199909) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16865 + ... + 16935.

It is an arithmetic number, because the mean of its divisors is an integer number (52948).

2^1199900 is an apocalyptic number.

1199900 is a gapful number since it is divisible by the number (10) 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 1199900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429596).

1199900 is an abundant number, since it is smaller than the sum of its proper divisors (1659292).

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

1199900 is a wasteful number, since it uses less digits than its factorization.

1199900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 1199900 is about 1095.3994705129. The cubic root of 1199900 is about 106.2629050069.

The spelling of 1199900 in words is "one million, one hundred ninety-nine thousand, nine hundred".