396387783693 has 24 divisors (see below), whose sum is σ = 639136898400. Its totient is φ = 234648156960.

The previous prime is 396387783653. The next prime is 396387783739.

It is a happy number.

396387783693 is a `hidden beast` number, since 3 + 96 + 387 + 78 + 3 + 6 + 93 = 666.

396387783693 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 396387783693 - 2¹² = 396387779597 is a prime.

It is a super-2 number, since 2×396387783693² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396387783653) 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 23 ways as a sum of consecutive naturals, for example, 46552918 + ... + 46561431.

It is an arithmetic number, because the mean of its divisors is an integer number (26630704100).

Almost surely, 2^396387783693 is an apocalyptic number.

396387783693 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

396387783693 is a deficient number, since it is larger than the sum of its proper divisors (242749114707).

396387783693 is a wasteful number, since it uses less digits than its factorization.

396387783693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93114409 (or 93114406 counting only the distinct ones).

The product of its digits is 740710656, while the sum is 72.

The spelling of 396387783693 in words is "three hundred ninety-six billion, three hundred eighty-seven million, seven hundred eighty-three thousand, six hundred ninety-three".