395907540 has 48 divisors (see below), whose sum is σ = 1266905472. Its totient is φ = 90493056.

The previous prime is 395907527. The next prime is 395907557. The reversal of 395907540 is 45709593.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 395907492 and 395907501.

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, 470899 + ... + 471738.

It is an arithmetic number, because the mean of its divisors is an integer number (26393864).

Almost surely, 2^395907540 is an apocalyptic number.

395907540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

395907540 is an abundant number, since it is smaller than the sum of its proper divisors (870997932).

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

395907540 is a wasteful number, since it uses less digits than its factorization.

395907540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942656 (or 942654 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 395907540 is about 19897.4254616018. The cubic root of 395907540 is about 734.2848891759.

The spelling of 395907540 in words is "three hundred ninety-five million, nine hundred seven thousand, five hundred forty".