396986786 has 8 divisors (see below), whose sum is σ = 680548800. Its totient is φ = 170137188.

The previous prime is 396986767. The next prime is 396986789. The reversal of 396986786 is 687689693.

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

It is not an unprimeable number, because it can be changed into a prime (396986789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14178086 + ... + 14178113.

It is an arithmetic number, because the mean of its divisors is an integer number (85068600).

Almost surely, 2^396986786 is an apocalyptic number.

396986786 is a deficient number, since it is larger than the sum of its proper divisors (283562014).

396986786 is a wasteful number, since it uses less digits than its factorization.

396986786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28356208.

The product of its digits is 23514624, while the sum is 62.

The square root of 396986786 is about 19924.5272465873. The cubic root of 396986786 is about 734.9515052768.

The spelling of 396986786 in words is "three hundred ninety-six million, nine hundred eighty-six thousand, seven hundred eighty-six".