395473815 has 24 divisors (see below), whose sum is σ = 747805968. Its totient is φ = 191744640.

The previous prime is 395473807. The next prime is 395473817. The reversal of 395473815 is 518374593.

It is not a de Polignac number, because 395473815 - 2³ = 395473807 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395473817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398974 + ... + 399963.

It is an arithmetic number, because the mean of its divisors is an integer number (31158582).

Almost surely, 2^395473815 is an apocalyptic number.

395473815 is a deficient number, since it is larger than the sum of its proper divisors (352332153).

395473815 is a wasteful number, since it uses less digits than its factorization.

395473815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798959 (or 798956 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 395473815 is about 19886.5234518254. The cubic root of 395473815 is about 734.0166497076.

The spelling of 395473815 in words is "three hundred ninety-five million, four hundred seventy-three thousand, eight hundred fifteen".