394254597889 has 4 divisors (see below), whose sum is σ = 394261073856. Its totient is φ = 394248121924.

The previous prime is 394254597883. The next prime is 394254597907. The reversal of 394254597889 is 988795452493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 394254597889 - 2⁷ = 394254597761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394254597883) 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, 3145789 + ... + 3268714.

It is an arithmetic number, because the mean of its divisors is an integer number (98565268464).

Almost surely, 2^394254597889 is an apocalyptic number.

It is an amenable number.

394254597889 is a deficient number, since it is larger than the sum of its proper divisors (6475967).

394254597889 is an equidigital number, since it uses as much as digits as its factorization.

394254597889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475966.

The product of its digits is 783820800, while the sum is 73.

The spelling of 394254597889 in words is "three hundred ninety-four billion, two hundred fifty-four million, five hundred ninety-seven thousand, eight hundred eighty-nine".