397426303 has 2 divisors, whose sum is σ = 397426304. Its totient is φ = 397426302.

The previous prime is 397426297. The next prime is 397426319. The reversal of 397426303 is 303624793.

It is a weak prime.

It is an emirp because it is prime and its reverse (303624793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397426303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397426333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198713151 + 198713152.

It is an arithmetic number, because the mean of its divisors is an integer number (198713152).

Almost surely, 2^397426303 is an apocalyptic number.

397426303 is a deficient number, since it is larger than the sum of its proper divisors (1).

397426303 is an equidigital number, since it uses as much as digits as its factorization.

397426303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 37.

The square root of 397426303 is about 19935.5537419957. The cubic root of 397426303 is about 735.2226348252. Note that the first 3 decimals are identical.

The spelling of 397426303 in words is "three hundred ninety-seven million, four hundred twenty-six thousand, three hundred three".