395060640 has 96 divisors (see below), whose sum is σ = 1340188416. Its totient is φ = 97244160.

The previous prime is 395060629. The next prime is 395060641. The reversal of 395060640 is 46060593.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (395060641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25416 + ... + 37895.

It is an arithmetic number, because the mean of its divisors is an integer number (13960296).

Almost surely, 2^395060640 is an apocalyptic number.

395060640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

395060640 is an abundant number, since it is smaller than the sum of its proper divisors (945127776).

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

395060640 is a wasteful number, since it uses less digits than its factorization.

395060640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63342 (or 63334 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 395060640 is about 19876.1324205691. The cubic root of 395060640 is about 733.7609370271.

The spelling of 395060640 in words is "three hundred ninety-five million, sixty thousand, six hundred forty".