195940440 has 48 divisors (see below), whose sum is σ = 636807600. Its totient is φ = 52250688.

The previous prime is 195940439. The next prime is 195940441. The reversal of 195940440 is 44049591.

It is a happy number.

195940440 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 an interprime number because it is at equal distance from previous prime (195940439) and next prime (195940441).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 195940395 and 195940404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195940441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271780 + ... + 272499.

It is an arithmetic number, because the mean of its divisors is an integer number (13266825).

Almost surely, 2^195940440 is an apocalyptic number.

195940440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195940440 is an abundant number, since it is smaller than the sum of its proper divisors (440867160).

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

195940440 is a wasteful number, since it uses less digits than its factorization.

195940440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544296 (or 544289 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 195940440 is about 13997.8726955206. The cubic root of 195940440 is about 580.8197287427.

The spelling of 195940440 in words is "one hundred ninety-five million, nine hundred forty thousand, four hundred forty".