199446540 has 24 divisors (see below), whose sum is σ = 558450480. Its totient is φ = 53185728.

The previous prime is 199446523. The next prime is 199446551. The reversal of 199446540 is 45644991.

It is a junction number, because it is equal to n+sod(n) for n = 199446492 and 199446501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661995 + ... + 1662114.

It is an arithmetic number, because the mean of its divisors is an integer number (23268770).

Almost surely, 2^199446540 is an apocalyptic number.

199446540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199446540 is an abundant number, since it is smaller than the sum of its proper divisors (359003940).

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

199446540 is a wasteful number, since it uses less digits than its factorization.

199446540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324121 (or 3324119 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 199446540 is about 14122.5543015419. The cubic root of 199446540 is about 584.2636069908.

The spelling of 199446540 in words is "one hundred ninety-nine million, four hundred forty-six thousand, five hundred forty".