396909694 has 8 divisors (see below), whose sum is σ = 609210360. Its totient is φ = 193839576.

The previous prime is 396909683. The next prime is 396909719. The reversal of 396909694 is 496909693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 2307529 + ... + 2307700.

It is an arithmetic number, because the mean of its divisors is an integer number (76151295).

Almost surely, 2^396909694 is an apocalyptic number.

396909694 is a deficient number, since it is larger than the sum of its proper divisors (212300666).

396909694 is a wasteful number, since it uses less digits than its factorization.

396909694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615274.

The product of its (nonzero) digits is 2834352, while the sum is 55.

The square root of 396909694 is about 19922.5925521755. The cubic root of 396909694 is about 734.9039280850.

Subtracting 396909694 from its reverse (496909693), we obtain a palindrome (99999999).

The spelling of 396909694 in words is "three hundred ninety-six million, nine hundred nine thousand, six hundred ninety-four".