395561790 has 96 divisors (see below), whose sum is σ = 1128647520. Its totient is φ = 95516928.

The previous prime is 395561743. The next prime is 395561819. The reversal of 395561790 is 97165593.

395561790 is a `hidden beast` number, since 3 + 9 + 556 + 1 + 7 + 90 = 666.

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 47 ways as a sum of consecutive naturals, for example, 58821 + ... + 65199.

It is an arithmetic number, because the mean of its divisors is an integer number (11756745).

Almost surely, 2^395561790 is an apocalyptic number.

395561790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 395561790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564323760).

395561790 is an abundant number, since it is smaller than the sum of its proper divisors (733085730).

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

395561790 is a wasteful number, since it uses less digits than its factorization.

395561790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458 (or 6455 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 45.

The square root of 395561790 is about 19888.7352539069. The cubic root of 395561790 is about 734.0710741512.

The spelling of 395561790 in words is "three hundred ninety-five million, five hundred sixty-one thousand, seven hundred ninety".