394694407153 has 2 divisors, whose sum is σ = 394694407154. Its totient is φ = 394694407152.

The previous prime is 394694407141. The next prime is 394694407157. The reversal of 394694407153 is 351704496493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343422956529 + 51271450624 = 586023^2 + 226432^2 .

It is a cyclic number.

It is not a de Polignac number, because 394694407153 - 2⁹ = 394694406641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394694407094 and 394694407103.

It is not a weakly prime, because it can be changed into another prime (394694407157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197347203576 + 197347203577.

It is an arithmetic number, because the mean of its divisors is an integer number (197347203577).

Almost surely, 2^394694407153 is an apocalyptic number.

It is an amenable number.

394694407153 is a deficient number, since it is larger than the sum of its proper divisors (1).

394694407153 is an equidigital number, since it uses as much as digits as its factorization.

394694407153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 394694407153 in words is "three hundred ninety-four billion, six hundred ninety-four million, four hundred seven thousand, one hundred fifty-three".