195799440 has 40 divisors (see below), whose sum is σ = 606979008. Its totient is φ = 52213120.

The previous prime is 195799403. The next prime is 195799463. The reversal of 195799440 is 44997591.

195799440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 195799440.

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, 407676 + ... + 408155.

Almost surely, 2^195799440 is an apocalyptic number.

195799440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195799440 is an abundant number, since it is smaller than the sum of its proper divisors (411179568).

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

195799440 is a wasteful number, since it uses less digits than its factorization.

195799440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815847 (or 815841 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 195799440 is about 13992.8353095432. The cubic root of 195799440 is about 580.6803747740.

The spelling of 195799440 in words is "one hundred ninety-five million, seven hundred ninety-nine thousand, four hundred forty".