396534491 has 2 divisors, whose sum is σ = 396534492. Its totient is φ = 396534490.

The previous prime is 396534451. The next prime is 396534497. The reversal of 396534491 is 194435693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396534491 - 2¹⁴ = 396518107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (396534497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198267245 + 198267246.

It is an arithmetic number, because the mean of its divisors is an integer number (198267246).

Almost surely, 2^396534491 is an apocalyptic number.

396534491 is a deficient number, since it is larger than the sum of its proper divisors (1).

396534491 is an equidigital number, since it uses as much as digits as its factorization.

396534491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 44.

The square root of 396534491 is about 19913.1738052978. The cubic root of 396534491 is about 734.6722842170.

It can be divided in two parts, 39653 and 4491, that added together give a palindrome (44144).

The spelling of 396534491 in words is "three hundred ninety-six million, five hundred thirty-four thousand, four hundred ninety-one".