396005989 has 2 divisors, whose sum is σ = 396005990. Its totient is φ = 396005988.

The previous prime is 396005977. The next prime is 396006001. The reversal of 396005989 is 989500693.

It is a balanced prime because it is at equal distance from previous prime (396005977) and next prime (396006001).

It can be written as a sum of positive squares in only one way, i.e., 349316100 + 46689889 = 18690^2 + 6833^2 .

It is a cyclic number.

It is not a de Polignac number, because 396005989 - 2⁵ = 396005957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396005959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198002994 + 198002995.

It is an arithmetic number, because the mean of its divisors is an integer number (198002995).

Almost surely, 2^396005989 is an apocalyptic number.

It is an amenable number.

396005989 is a deficient number, since it is larger than the sum of its proper divisors (1).

396005989 is an equidigital number, since it uses as much as digits as its factorization.

396005989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 396005989 is about 19899.8992208503. The cubic root of 396005989 is about 734.3457481851.

The spelling of 396005989 in words is "three hundred ninety-six million, five thousand, nine hundred eighty-nine".