397798033 has 2 divisors, whose sum is σ = 397798034. Its totient is φ = 397798032.

The previous prime is 397797979. The next prime is 397798043. The reversal of 397798033 is 330897793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354079489 + 43718544 = 18817^2 + 6612^2 .

It is a cyclic number.

It is not a de Polignac number, because 397798033 - 2¹³ = 397789841 is a prime.

It is not a weakly prime, because it can be changed into another prime (397798043) 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, 198899016 + 198899017.

It is an arithmetic number, because the mean of its divisors is an integer number (198899017).

Almost surely, 2^397798033 is an apocalyptic number.

It is an amenable number.

397798033 is a deficient number, since it is larger than the sum of its proper divisors (1).

397798033 is an equidigital number, since it uses as much as digits as its factorization.

397798033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 49.

The square root of 397798033 is about 19944.8748554610. The cubic root of 397798033 is about 735.4517918967.

The spelling of 397798033 in words is "three hundred ninety-seven million, seven hundred ninety-eight thousand, thirty-three".