395549540 has 48 divisors (see below), whose sum is σ = 884265984. Its totient is φ = 148108800.

The previous prime is 395549537. The next prime is 395549549. The reversal of 395549540 is 45945593.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 395549491 and 395549500.

It is not an unprimeable number, because it can be changed into a prime (395549549) 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, 61895 + ... + 67985.

It is an arithmetic number, because the mean of its divisors is an integer number (18422208).

Almost surely, 2^395549540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395549540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442132992).

395549540 is an abundant number, since it is smaller than the sum of its proper divisors (488716444).

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

395549540 is a wasteful number, since it uses less digits than its factorization.

395549540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6308 (or 6306 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 44.

The square root of 395549540 is about 19888.4272882498. The cubic root of 395549540 is about 734.0634963519.

It can be divided in two parts, 39554 and 9540, that added together give a palindrome (49094).

The spelling of 395549540 in words is "three hundred ninety-five million, five hundred forty-nine thousand, five hundred forty".