396738533 has 2 divisors, whose sum is σ = 396738534. Its totient is φ = 396738532.

The previous prime is 396738499. The next prime is 396738581. The reversal of 396738533 is 335837693.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367987489 + 28751044 = 19183^2 + 5362^2 .

It is a cyclic number.

It is not a de Polignac number, because 396738533 - 2¹⁸ = 396476389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396732533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198369266 + 198369267.

It is an arithmetic number, because the mean of its divisors is an integer number (198369267).

Almost surely, 2^396738533 is an apocalyptic number.

It is an amenable number.

396738533 is a deficient number, since it is larger than the sum of its proper divisors (1).

396738533 is an equidigital number, since it uses as much as digits as its factorization.

396738533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 47.

The square root of 396738533 is about 19918.2964381997. The cubic root of 396738533 is about 734.7982743484.

The spelling of 396738533 in words is "three hundred ninety-six million, seven hundred thirty-eight thousand, five hundred thirty-three".