397791583 has 8 divisors (see below), whose sum is σ = 454884480. Its totient is φ = 340765080.

The previous prime is 397791547. The next prime is 397791607. The reversal of 397791583 is 385197793.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397791583 - 2¹⁷ = 397660511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397791583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397792583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3013 + ... + 28366.

It is an arithmetic number, because the mean of its divisors is an integer number (56860560).

Almost surely, 2^397791583 is an apocalyptic number.

397791583 is a deficient number, since it is larger than the sum of its proper divisors (57092897).

397791583 is a wasteful number, since it uses less digits than its factorization.

397791583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33197.

The product of its digits is 1428840, while the sum is 52.

The square root of 397791583 is about 19944.7131591307. The cubic root of 397791583 is about 735.4478169401.

The spelling of 397791583 in words is "three hundred ninety-seven million, seven hundred ninety-one thousand, five hundred eighty-three".