397426333 has 2 divisors, whose sum is σ = 397426334. Its totient is φ = 397426332.

The previous prime is 397426321. The next prime is 397426373. The reversal of 397426333 is 333624793.

It is an a-pointer prime, because the next prime (397426373) can be obtained adding 397426333 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325549849 + 71876484 = 18043^2 + 8478^2 .

It is an emirp because it is prime and its reverse (333624793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397426333 - 2²⁵ = 363871901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397426303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198713166 + 198713167.

It is an arithmetic number, because the mean of its divisors is an integer number (198713167).

Almost surely, 2^397426333 is an apocalyptic number.

It is an amenable number.

397426333 is a deficient number, since it is larger than the sum of its proper divisors (1).

397426333 is an equidigital number, since it uses as much as digits as its factorization.

397426333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 40.

The square root of 397426333 is about 19935.5544944203. The cubic root of 397426333 is about 735.2226533248. Note that the first 3 decimals are identical.

The spelling of 397426333 in words is "three hundred ninety-seven million, four hundred twenty-six thousand, three hundred thirty-three".