394935523 has 2 divisors, whose sum is σ = 394935524. Its totient is φ = 394935522.

The previous prime is 394935511. The next prime is 394935559. The reversal of 394935523 is 325539493.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394935523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394935523.

It is not a weakly prime, because it can be changed into another prime (394935623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197467761 + 197467762.

It is an arithmetic number, because the mean of its divisors is an integer number (197467762).

Almost surely, 2^394935523 is an apocalyptic number.

394935523 is a deficient number, since it is larger than the sum of its proper divisors (1).

394935523 is an equidigital number, since it uses as much as digits as its factorization.

394935523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 43.

The square root of 394935523 is about 19872.9847531769. The cubic root of 394935523 is about 733.6834673500.

The spelling of 394935523 in words is "three hundred ninety-four million, nine hundred thirty-five thousand, five hundred twenty-three".