405055247 has 8 divisors (see below), whose sum is σ = 407007744. Its totient is φ = 403108128.

The previous prime is 405055201. The next prime is 405055249. The reversal of 405055247 is 742550504.

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 405055247 - 2¹² = 405051151 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 (405055249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242738 + ... + 244400.

It is an arithmetic number, because the mean of its divisors is an integer number (50875968).

Almost surely, 2^405055247 is an apocalyptic number.

405055247 is a deficient number, since it is larger than the sum of its proper divisors (1952497).

405055247 is a wasteful number, since it uses less digits than its factorization.

405055247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 405055247 is about 20125.9843734412. The cubic root of 405055247 is about 739.8972629469.

The spelling of 405055247 in words is "four hundred five million, fifty-five thousand, two hundred forty-seven".