396858389 has 2 divisors, whose sum is σ = 396858390. Its totient is φ = 396858388.

The previous prime is 396858383. The next prime is 396858401. The reversal of 396858389 is 983858693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225510289 + 171348100 = 15017^2 + 13090^2 .

It is a cyclic number.

It is not a de Polignac number, because 396858389 - 2¹⁶ = 396792853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396858383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198429194 + 198429195.

It is an arithmetic number, because the mean of its divisors is an integer number (198429195).

Almost surely, 2^396858389 is an apocalyptic number.

It is an amenable number.

396858389 is a deficient number, since it is larger than the sum of its proper divisors (1).

396858389 is an equidigital number, since it uses as much as digits as its factorization.

396858389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 59.

The square root of 396858389 is about 19921.3049020389. The cubic root of 396858389 is about 734.8722618804.

The spelling of 396858389 in words is "three hundred ninety-six million, eight hundred fifty-eight thousand, three hundred eighty-nine".