403000397 has 2 divisors, whose sum is σ = 403000398. Its totient is φ = 403000396.

The previous prime is 403000309. The next prime is 403000417. The reversal of 403000397 is 793000304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389707081 + 13293316 = 19741^2 + 3646^2 .

It is a cyclic number.

It is not a de Polignac number, because 403000397 - 2¹⁴ = 402984013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403000307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201500198 + 201500199.

It is an arithmetic number, because the mean of its divisors is an integer number (201500199).

Almost surely, 2^403000397 is an apocalyptic number.

It is an amenable number.

403000397 is a deficient number, since it is larger than the sum of its proper divisors (1).

403000397 is an equidigital number, since it uses as much as digits as its factorization.

403000397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 403000397 is about 20074.8697878716. The cubic root of 403000397 is about 738.6439720790.

The spelling of 403000397 in words is "four hundred three million, three hundred ninety-seven", and thus it is an aban number.