397824005 has 16 divisors (see below), whose sum is σ = 492075648. Its totient is φ = 308616000.

The previous prime is 397823981. The next prime is 397824017. The reversal of 397824005 is 500428793.

It is not a de Polignac number, because 397824005 - 2⁶ = 397823941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 397824005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12470 + ... + 30840.

It is an arithmetic number, because the mean of its divisors is an integer number (30754728).

Almost surely, 2^397824005 is an apocalyptic number.

It is an amenable number.

397824005 is a deficient number, since it is larger than the sum of its proper divisors (94251643).

397824005 is a wasteful number, since it uses less digits than its factorization.

397824005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18508.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 397824005 is about 19945.5259394181. The cubic root of 397824005 is about 735.4677972869.

The spelling of 397824005 in words is "three hundred ninety-seven million, eight hundred twenty-four thousand, five".