396520025693 has 4 divisors (see below), whose sum is σ = 432567300768. Its totient is φ = 360472750620.

The previous prime is 396520025689. The next prime is 396520025723.

It is a happy number.

396520025693 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 396520025693 - 2² = 396520025689 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 (396520025623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18023637521 + ... + 18023637542.

It is an arithmetic number, because the mean of its divisors is an integer number (108141825192).

Almost surely, 2^396520025693 is an apocalyptic number.

It is an amenable number.

396520025693 is a deficient number, since it is larger than the sum of its proper divisors (36047275075).

396520025693 is a wasteful number, since it uses less digits than its factorization.

396520025693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36047275074.

The product of its (nonzero) digits is 2624400, while the sum is 50.

The spelling of 396520025693 in words is "three hundred ninety-six billion, five hundred twenty million, twenty-five thousand, six hundred ninety-three".