199389040 has 80 divisors (see below), whose sum is σ = 498539520. Its totient is φ = 73923840.

The previous prime is 199389023. The next prime is 199389067. The reversal of 199389040 is 40983991.

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

It is a congruent number.

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, 70045 + ... + 72835.

It is an arithmetic number, because the mean of its divisors is an integer number (6231744).

Almost surely, 2^199389040 is an apocalyptic number.

199389040 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 199389040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249269760).

199389040 is an abundant number, since it is smaller than the sum of its proper divisors (299150480).

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

199389040 is a wasteful number, since it uses less digits than its factorization.

199389040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 199389040 is about 14120.5184040813. The cubic root of 199389040 is about 584.2074542888.

The spelling of 199389040 in words is "one hundred ninety-nine million, three hundred eighty-nine thousand, forty".