395389072240 has 80 divisors (see below), whose sum is σ = 978246763200. Its totient is φ = 148104253440.

The previous prime is 395389072219. The next prime is 395389072259. The reversal of 395389072240 is 42270983593.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459831 + ... + 1001110.

It is an arithmetic number, because the mean of its divisors is an integer number (12228084540).

Almost surely, 2^395389072240 is an apocalyptic number.

It is an amenable number.

395389072240 is an abundant number, since it is smaller than the sum of its proper divisors (582857690960).

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

395389072240 is a wasteful number, since it uses less digits than its factorization.

395389072240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461170 (or 1461164 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 395389072240 in words is "three hundred ninety-five billion, three hundred eighty-nine million, seventy-two thousand, two hundred forty".