397983922587 has 36 divisors (see below), whose sum is σ = 593974545960. Its totient is φ = 263371086792.

The previous prime is 397983922543. The next prime is 397983922597. The reversal of 397983922587 is 785229389793.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

397983922587 is a `hidden beast` number, since 3 + 9 + 7 + 9 + 8 + 39 + 2 + 2 + 587 = 666.

It is not a de Polignac number, because 397983922587 - 2¹¹ = 397983920539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397983922597) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 547432818 + ... + 547433544.

Almost surely, 2^397983922587 is an apocalyptic number.

397983922587 is a deficient number, since it is larger than the sum of its proper divisors (195990623373).

397983922587 is an frugal number, since it uses more digits than its factorization.

397983922587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797 (or 897 counting only the distinct ones).

The product of its digits is 411505920, while the sum is 72.

The spelling of 397983922587 in words is "three hundred ninety-seven billion, nine hundred eighty-three million, nine hundred twenty-two thousand, five hundred eighty-seven".