396612091 has 32 divisors (see below), whose sum is σ = 454196160. Its totient is φ = 344408064.

The previous prime is 396612067. The next prime is 396612103. The reversal of 396612091 is 190216693.

It is a cyclic number.

It is not a de Polignac number, because 396612091 - 2⁵ = 396612059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396612091.

It is not an unprimeable number, because it can be changed into a prime (396612001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1123371 + ... + 1123723.

It is an arithmetic number, because the mean of its divisors is an integer number (14193630).

Almost surely, 2^396612091 is an apocalyptic number.

396612091 is a deficient number, since it is larger than the sum of its proper divisors (57584069).

396612091 is a wasteful number, since it uses less digits than its factorization.

396612091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 396612091 is about 19915.1221688445. The cubic root of 396612091 is about 734.7202051016.

The spelling of 396612091 in words is "three hundred ninety-six million, six hundred twelve thousand, ninety-one".