396123911 has 4 divisors (see below), whose sum is σ = 397043424. Its totient is φ = 395204400.

The previous prime is 396123907. The next prime is 396123929. The reversal of 396123911 is 119321693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 396123911 - 2² = 396123907 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 (396123991) 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 3 ways as a sum of consecutive naturals, for example, 459110 + ... + 459971.

It is an arithmetic number, because the mean of its divisors is an integer number (99260856).

Almost surely, 2^396123911 is an apocalyptic number.

396123911 is a deficient number, since it is larger than the sum of its proper divisors (919513).

396123911 is an equidigital number, since it uses as much as digits as its factorization.

396123911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919512.

The product of its digits is 8748, while the sum is 35.

The square root of 396123911 is about 19902.8618796393. The cubic root of 396123911 is about 734.4186317001.

It can be divided in two parts, 3961 and 23911, that added together give a palindrome (27872).

The spelling of 396123911 in words is "three hundred ninety-six million, one hundred twenty-three thousand, nine hundred eleven".