397598493 has 16 divisors (see below), whose sum is σ = 557415936. Its totient is φ = 251599920.

The previous prime is 397598491. The next prime is 397598501. The reversal of 397598493 is 394895793.

It is not a de Polignac number, because 397598493 - 2¹ = 397598491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397598491) 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 15 ways as a sum of consecutive naturals, for example, 12955 + ... + 31032.

It is an arithmetic number, because the mean of its divisors is an integer number (34838496).

Almost surely, 2^397598493 is an apocalyptic number.

It is an amenable number.

397598493 is a deficient number, since it is larger than the sum of its proper divisors (159817443).

397598493 is a wasteful number, since it uses less digits than its factorization.

397598493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44144.

The product of its digits is 7348320, while the sum is 57.

The square root of 397598493 is about 19939.8719404113. The cubic root of 397598493 is about 735.3288010130.

The spelling of 397598493 in words is "three hundred ninety-seven million, five hundred ninety-eight thousand, four hundred ninety-three".