395401890959 has 4 divisors (see below), whose sum is σ = 404597283816. Its totient is φ = 386206498104.

The previous prime is 395401890953. The next prime is 395401890967. The reversal of 395401890959 is 959098104593.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 395401890959 - 2⁴ = 395401890943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395401890953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4597696364 + ... + 4597696449.

It is an arithmetic number, because the mean of its divisors is an integer number (101149320954).

Almost surely, 2^395401890959 is an apocalyptic number.

395401890959 is a deficient number, since it is larger than the sum of its proper divisors (9195392857).

395401890959 is an equidigital number, since it uses as much as digits as its factorization.

395401890959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9195392856.

The product of its (nonzero) digits is 15746400, while the sum is 62.

The spelling of 395401890959 in words is "three hundred ninety-five billion, four hundred one million, eight hundred ninety thousand, nine hundred fifty-nine".