199443764 has 48 divisors (see below), whose sum is σ = 402907008. Its totient is φ = 85650048.

The previous prime is 199443763. The next prime is 199443767. The reversal of 199443764 is 467344991.

199443764 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199443763) 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, 41999 + ... + 46505.

It is an arithmetic number, because the mean of its divisors is an integer number (8393896).

Almost surely, 2^199443764 is an apocalyptic number.

It is an amenable number.

199443764 is an abundant number, since it is smaller than the sum of its proper divisors (203463244).

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

199443764 is a wasteful number, since it uses less digits than its factorization.

199443764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584 (or 4582 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 199443764 is about 14122.4560186959. The cubic root of 199443764 is about 584.2608962840.

The spelling of 199443764 in words is "one hundred ninety-nine million, four hundred forty-three thousand, seven hundred sixty-four".