396121693 has 12 divisors (see below), whose sum is σ = 442794240. Its totient is φ = 354000680.

The previous prime is 396121679. The next prime is 396121699.

396121693 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-396121693 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 (396121699) 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 11 ways as a sum of consecutive naturals, for example, 20605 + ... + 34882.

It is an arithmetic number, because the mean of its divisors is an integer number (36899520).

Almost surely, 2^396121693 is an apocalyptic number.

It is an amenable number.

396121693 is a deficient number, since it is larger than the sum of its proper divisors (46672547).

396121693 is a wasteful number, since it uses less digits than its factorization.

396121693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55568 (or 55557 counting only the distinct ones).

The product of its digits is 52488, while the sum is 40.

The square root of 396121693 is about 19902.8061589315. The cubic root of 396121693 is about 734.4172609644.

The spelling of 396121693 in words is "three hundred ninety-six million, one hundred twenty-one thousand, six hundred ninety-three".