396539089 has 2 divisors, whose sum is σ = 396539090. Its totient is φ = 396539088.

The previous prime is 396539071. The next prime is 396539107. The reversal of 396539089 is 980935693.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (396539071) and next prime (396539107).

It can be written as a sum of positive squares in only one way, i.e., 242580625 + 153958464 = 15575^2 + 12408^2 .

It is a cyclic number.

It is not a de Polignac number, because 396539089 - 2²¹ = 394441937 is a prime.

It is not a weakly prime, because it can be changed into another prime (396533089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198269544 + 198269545.

It is an arithmetic number, because the mean of its divisors is an integer number (198269545).

Almost surely, 2^396539089 is an apocalyptic number.

It is an amenable number.

396539089 is a deficient number, since it is larger than the sum of its proper divisors (1).

396539089 is an equidigital number, since it uses as much as digits as its factorization.

396539089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 396539089 is about 19913.2892561726. The cubic root of 396539089 is about 734.6751238272.

The spelling of 396539089 in words is "three hundred ninety-six million, five hundred thirty-nine thousand, eighty-nine".