199468540 has 24 divisors (see below), whose sum is σ = 420325920. Its totient is φ = 79512768.

The previous prime is 199468519. The next prime is 199468541. The reversal of 199468540 is 45864991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199468541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11160 + ... + 22879.

It is an arithmetic number, because the mean of its divisors is an integer number (17513580).

Almost surely, 2^199468540 is an apocalyptic number.

199468540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199468540 is an abundant number, since it is smaller than the sum of its proper divisors (220857380).

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

199468540 is a wasteful number, since it uses less digits than its factorization.

199468540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34341 (or 34339 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 199468540 is about 14123.3331759893. Note that the first 3 decimals coincide. The cubic root of 199468540 is about 584.2850886483.

The spelling of 199468540 in words is "one hundred ninety-nine million, four hundred sixty-eight thousand, five hundred forty".