396545693 has 4 divisors (see below), whose sum is σ = 398205120. Its totient is φ = 394886268.

The previous prime is 396545683. The next prime is 396545711.

396545693 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 a de Polignac number, because none of the positive numbers 2^k-396545693 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 (396545663) 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, 829355 + ... + 829832.

It is an arithmetic number, because the mean of its divisors is an integer number (99551280).

Almost surely, 2^396545693 is an apocalyptic number.

It is an amenable number.

396545693 is a deficient number, since it is larger than the sum of its proper divisors (1659427).

396545693 is a wasteful number, since it uses less digits than its factorization.

396545693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659426.

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

The square root of 396545693 is about 19913.4550743963. The cubic root of 396545693 is about 734.6792022545.

The spelling of 396545693 in words is "three hundred ninety-six million, five hundred forty-five thousand, six hundred ninety-three".