396592687447 has 4 divisors (see below), whose sum is σ = 432646568136. Its totient is φ = 360538806760.

The previous prime is 396592687433. The next prime is 396592687459. The reversal of 396592687447 is 744786295693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744786295693 = 11 ⋅67707845063.

It is a de Polignac number, because none of the positive numbers 2^k-396592687447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396592687417) 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 3 ways as a sum of consecutive naturals, for example, 18026940328 + ... + 18026940349.

It is an arithmetic number, because the mean of its divisors is an integer number (108161642034).

Almost surely, 2^396592687447 is an apocalyptic number.

396592687447 is a deficient number, since it is larger than the sum of its proper divisors (36053880689).

396592687447 is a wasteful number, since it uses less digits than its factorization.

396592687447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36053880688.

The product of its digits is 548674560, while the sum is 70.

The spelling of 396592687447 in words is "three hundred ninety-six billion, five hundred ninety-two million, six hundred eighty-seven thousand, four hundred forty-seven".