394615449693 has 6 divisors (see below), whose sum is σ = 570000094014. Its totient is φ = 263076966456.

The previous prime is 394615449691. The next prime is 394615449707. The reversal of 394615449693 is 396944516493.

394615449693 is a `hidden beast` number, since 3 + 9 + 4 + 6 + 1 + 54 + 496 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 377538971364 + 17076478329 = 614442^2 + 130677^2 .

It is not a de Polignac number, because 394615449693 - 2¹ = 394615449691 is a prime.

It is a super-2 number, since 2×394615449693² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 394615449693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394615449691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21923080530 + ... + 21923080547.

It is an arithmetic number, because the mean of its divisors is an integer number (95000015669).

Almost surely, 2^394615449693 is an apocalyptic number.

It is an amenable number.

394615449693 is a deficient number, since it is larger than the sum of its proper divisors (175384644321).

394615449693 is a wasteful number, since it uses less digits than its factorization.

394615449693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43846161083 (or 43846161080 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 63.

The spelling of 394615449693 in words is "three hundred ninety-four billion, six hundred fifteen million, four hundred forty-nine thousand, six hundred ninety-three".