395440880 has 20 divisors (see below), whose sum is σ = 919400232. Its totient is φ = 158176320.

The previous prime is 395440847. The next prime is 395440889. The reversal of 395440880 is 88044593.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×395440880³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395440889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471426 + ... + 2471585.

Almost surely, 2^395440880 is an apocalyptic number.

It is an amenable number.

395440880 is an abundant number, since it is smaller than the sum of its proper divisors (523959352).

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

395440880 is a wasteful number, since it uses less digits than its factorization.

395440880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943024 (or 4943018 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 395440880 is about 19885.6953612389. The cubic root of 395440880 is about 733.9962728764.

The spelling of 395440880 in words is "three hundred ninety-five million, four hundred forty thousand, eight hundred eighty".