394194261323 has 4 divisors (see below), whose sum is σ = 394261731528. Its totient is φ = 394126791120.

The previous prime is 394194261301. The next prime is 394194261337. The reversal of 394194261323 is 323162491493.

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 394194261323 - 2²⁶ = 394127152459 is a prime.

It is a super-2 number, since 2×394194261323² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394194261823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33726338 + ... + 33738023.

It is an arithmetic number, because the mean of its divisors is an integer number (98565432882).

Almost surely, 2^394194261323 is an apocalyptic number.

394194261323 is a deficient number, since it is larger than the sum of its proper divisors (67470205).

394194261323 is an equidigital number, since it uses as much as digits as its factorization.

394194261323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67470204.

The product of its digits is 839808, while the sum is 47.

The spelling of 394194261323 in words is "three hundred ninety-four billion, one hundred ninety-four million, two hundred sixty-one thousand, three hundred twenty-three".