405668097247 has 4 divisors (see below), whose sum is σ = 463620682576. Its totient is φ = 347715511920.

The previous prime is 405668097223. The next prime is 405668097269. The reversal of 405668097247 is 742790866504.

It is a happy number.

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

It is not a de Polignac number, because 405668097247 - 2¹¹ = 405668095199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405668097191 and 405668097200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405668097277) 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, 28976292654 + ... + 28976292667.

It is an arithmetic number, because the mean of its divisors is an integer number (115905170644).

Almost surely, 2^405668097247 is an apocalyptic number.

405668097247 is a deficient number, since it is larger than the sum of its proper divisors (57952585329).

405668097247 is an equidigital number, since it uses as much as digits as its factorization.

405668097247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57952585328.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 405668097247 in words is "four hundred five billion, six hundred sixty-eight million, ninety-seven thousand, two hundred forty-seven".