396631247 has 8 divisors (see below), whose sum is σ = 399784320. Its totient is φ = 393485400.

The previous prime is 396631241. The next prime is 396631283. The reversal of 396631247 is 742136693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396631247 - 2⁸ = 396630991 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 (396631241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168404 + ... + 170742.

It is an arithmetic number, because the mean of its divisors is an integer number (49973040).

Almost surely, 2^396631247 is an apocalyptic number.

396631247 is a deficient number, since it is larger than the sum of its proper divisors (3153073).

396631247 is a wasteful number, since it uses less digits than its factorization.

396631247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613.

The product of its digits is 163296, while the sum is 41.

The square root of 396631247 is about 19915.6031040991. The cubic root of 396631247 is about 734.7320336817.

The spelling of 396631247 in words is "three hundred ninety-six million, six hundred thirty-one thousand, two hundred forty-seven".