396909693 has 32 divisors (see below), whose sum is σ = 639457920. Its totient is φ = 242300160.

The previous prime is 396909683. The next prime is 396909719.

396909693 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 396909693 - 2⁵ = 396909661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396909683) 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 31 ways as a sum of consecutive naturals, for example, 5298 + ... + 28668.

It is an arithmetic number, because the mean of its divisors is an integer number (19983060).

Almost surely, 2^396909693 is an apocalyptic number.

It is an amenable number.

396909693 is a deficient number, since it is larger than the sum of its proper divisors (242548227).

396909693 is a wasteful number, since it uses less digits than its factorization.

396909693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23434 (or 23428 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 54.

The square root of 396909693 is about 19922.5925270784. The cubic root of 396909693 is about 734.9039274678.

The spelling of 396909693 in words is "three hundred ninety-six million, nine hundred nine thousand, six hundred ninety-three".