395249670 has 48 divisors (see below), whose sum is σ = 1033074432. Its totient is φ = 104843520.

The previous prime is 395249669. The next prime is 395249681. The reversal of 395249670 is 76942593.

It is a happy number.

395249670 is a `hidden beast` number, since 3 + 95 + 2 + 496 + 70 = 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 23 ways as a sum of consecutive naturals, for example, 5694 + ... + 28686.

It is an arithmetic number, because the mean of its divisors is an integer number (21522384).

Almost surely, 2^395249670 is an apocalyptic number.

395249670 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 395249670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516537216).

395249670 is an abundant number, since it is smaller than the sum of its proper divisors (637824762).

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

395249670 is a wasteful number, since it uses less digits than its factorization.

395249670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23197 (or 23194 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 395249670 is about 19880.8870526443. The cubic root of 395249670 is about 733.8779492015.

It can be divided in two parts, 39524 and 9670, that added together give a palindrome (49194).

The spelling of 395249670 in words is "three hundred ninety-five million, two hundred forty-nine thousand, six hundred seventy".