396239983 has 2 divisors, whose sum is σ = 396239984. Its totient is φ = 396239982.

The previous prime is 396239971. The next prime is 396240007. The reversal of 396239983 is 389932693.

It is a weak prime.

It is an emirp because it is prime and its reverse (389932693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396239983 - 2²¹ = 394142831 is a prime.

It is a super-2 number, since 2×396239983² = 314012248255680578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 396239983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396239953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198119991 + 198119992.

It is an arithmetic number, because the mean of its divisors is an integer number (198119992).

Almost surely, 2^396239983 is an apocalyptic number.

396239983 is a deficient number, since it is larger than the sum of its proper divisors (1).

396239983 is an equidigital number, since it uses as much as digits as its factorization.

396239983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 52.

The square root of 396239983 is about 19905.7776286183. Note that the first 3 decimals coincide. The cubic root of 396239983 is about 734.4903576695.

The spelling of 396239983 in words is "three hundred ninety-six million, two hundred thirty-nine thousand, nine hundred eighty-three".