395405799 has 4 divisors (see below), whose sum is σ = 527207736. Its totient is φ = 263603864.

The previous prime is 395405761. The next prime is 395405819. The reversal of 395405799 is 997504593.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997504593 = 3 ⋅332501531.

It is a cyclic number.

It is not a de Polignac number, because 395405799 - 2⁹ = 395405287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395405299) 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 3 ways as a sum of consecutive naturals, for example, 65900964 + ... + 65900969.

It is an arithmetic number, because the mean of its divisors is an integer number (131801934).

Almost surely, 2^395405799 is an apocalyptic number.

395405799 is a deficient number, since it is larger than the sum of its proper divisors (131801937).

395405799 is a wasteful number, since it uses less digits than its factorization.

395405799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131801936.

The product of its (nonzero) digits is 1530900, while the sum is 51.

The square root of 395405799 is about 19884.8132754623. The cubic root of 395405799 is about 733.9745670741.

The spelling of 395405799 in words is "three hundred ninety-five million, four hundred five thousand, seven hundred ninety-nine".