395499554440 has 32 divisors (see below), whose sum is σ = 896880890880. Its totient is φ = 156954151872.

The previous prime is 395499554431. The next prime is 395499554449. The reversal of 395499554440 is 44455994593.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (395499554431) and next prime (395499554449).

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (395499554449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38922042 + ... + 38932201.

It is an arithmetic number, because the mean of its divisors is an integer number (28027527840).

Almost surely, 2^395499554440 is an apocalyptic number.

It is an amenable number.

395499554440 is an abundant number, since it is smaller than the sum of its proper divisors (501381336440).

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

395499554440 is a wasteful number, since it uses less digits than its factorization.

395499554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77854381 (or 77854377 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 61.

The spelling of 395499554440 in words is "three hundred ninety-five billion, four hundred ninety-nine million, five hundred fifty-four thousand, four hundred forty".