394270403 has 2 divisors, whose sum is σ = 394270404. Its totient is φ = 394270402.

The previous prime is 394270363. The next prime is 394270421. The reversal of 394270403 is 304072493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394270403 - 2⁸ = 394270147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394270403.

It is not a weakly prime, because it can be changed into another prime (394270423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197135201 + 197135202.

It is an arithmetic number, because the mean of its divisors is an integer number (197135202).

Almost surely, 2^394270403 is an apocalyptic number.

394270403 is a deficient number, since it is larger than the sum of its proper divisors (1).

394270403 is an equidigital number, since it uses as much as digits as its factorization.

394270403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 394270403 is about 19856.2434261871. The cubic root of 394270403 is about 733.2713648509.

The spelling of 394270403 in words is "three hundred ninety-four million, two hundred seventy thousand, four hundred three".