396966247 has 4 divisors (see below), whose sum is σ = 399630600. Its totient is φ = 394301896.

The previous prime is 396966217. The next prime is 396966257. The reversal of 396966247 is 742669693.

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 396966247 - 2¹⁵ = 396933479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 396966194 and 396966203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396966217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331953 + ... + 1332250.

It is an arithmetic number, because the mean of its divisors is an integer number (99907650).

Almost surely, 2^396966247 is an apocalyptic number.

396966247 is a deficient number, since it is larger than the sum of its proper divisors (2664353).

396966247 is a wasteful number, since it uses less digits than its factorization.

396966247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664352.

The product of its digits is 2939328, while the sum is 52.

The square root of 396966247 is about 19924.0118199122. The cubic root of 396966247 is about 734.9388302712.

The spelling of 396966247 in words is "three hundred ninety-six million, nine hundred sixty-six thousand, two hundred forty-seven".