394444444459 has 4 divisors (see below), whose sum is σ = 424786324816. Its totient is φ = 364102564104.

The previous prime is 394444444453. The next prime is 394444444463. The reversal of 394444444459 is 954444444493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954444444493 = 569603 ⋅1675631.

It is a cyclic number.

It is not a de Polignac number, because 394444444459 - 2²³ = 394436055851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394444444453) 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, 15170940159 + ... + 15170940184.

It is an arithmetic number, because the mean of its divisors is an integer number (106196581204).

Almost surely, 2^394444444459 is an apocalyptic number.

394444444459 is a deficient number, since it is larger than the sum of its proper divisors (30341880357).

394444444459 is a wasteful number, since it uses less digits than its factorization.

394444444459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30341880356.

The product of its digits is 79626240, while the sum is 58.

The spelling of 394444444459 in words is "three hundred ninety-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred fifty-nine".