396917446487 has 4 divisors (see below), whose sum is σ = 396977041416. Its totient is φ = 396857851560.

The previous prime is 396917446483. The next prime is 396917446493. The reversal of 396917446487 is 784644719693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 396917446487 - 2² = 396917446483 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 (396917446483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29787473 + ... + 29800794.

It is an arithmetic number, because the mean of its divisors is an integer number (99244260354).

Almost surely, 2^396917446487 is an apocalyptic number.

396917446487 is a deficient number, since it is larger than the sum of its proper divisors (59594929).

396917446487 is an equidigital number, since it uses as much as digits as its factorization.

396917446487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59594928.

The product of its digits is 219469824, while the sum is 68.

The spelling of 396917446487 in words is "three hundred ninety-six billion, nine hundred seventeen million, four hundred forty-six thousand, four hundred eighty-seven".