396798587 has 4 divisors (see below), whose sum is σ = 397087296. Its totient is φ = 396509880.

The previous prime is 396798583. The next prime is 396798601. The reversal of 396798587 is 785897693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785897693 = 7 ⋅112271099.

It is a cyclic number.

It is not a de Polignac number, because 396798587 - 2² = 396798583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396798583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142283 + ... + 145044.

It is an arithmetic number, because the mean of its divisors is an integer number (99271824).

Almost surely, 2^396798587 is an apocalyptic number.

396798587 is a deficient number, since it is larger than the sum of its proper divisors (288709).

396798587 is a wasteful number, since it uses less digits than its factorization.

396798587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288708.

The product of its digits is 22861440, while the sum is 62.

The square root of 396798587 is about 19919.8038895969. The cubic root of 396798587 is about 734.8353477570.

The spelling of 396798587 in words is "three hundred ninety-six million, seven hundred ninety-eight thousand, five hundred eighty-seven".