395097660 has 108 divisors (see below), whose sum is σ = 1223107704. Its totient is φ = 103213440.

The previous prime is 395097649. The next prime is 395097673. The reversal of 395097660 is 66790593.

It is a super-2 number, since 2×395097660² = 312204321874951200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2182770 + ... + 2182950.

Almost surely, 2^395097660 is an apocalyptic number.

395097660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395097660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611553852).

395097660 is an abundant number, since it is smaller than the sum of its proper divisors (828010044).

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

395097660 is a wasteful number, since it uses less digits than its factorization.

395097660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 395097660 is about 19877.0636664473. The cubic root of 395097660 is about 733.7838558558.

The spelling of 395097660 in words is "three hundred ninety-five million, ninety-seven thousand, six hundred sixty".