405783249 has 8 divisors (see below), whose sum is σ = 541162272. Its totient is φ = 270463200.

The previous prime is 405783241. The next prime is 405783253. The reversal of 405783249 is 942387504.

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

It is not a de Polignac number, because 405783249 - 2³ = 405783241 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 405783249.

It is not an unprimeable number, because it can be changed into a prime (405783241) 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, 5149 + ... + 28949.

It is an arithmetic number, because the mean of its divisors is an integer number (67645284).

Almost surely, 2^405783249 is an apocalyptic number.

It is an amenable number.

405783249 is a deficient number, since it is larger than the sum of its proper divisors (135379023).

405783249 is a wasteful number, since it uses less digits than its factorization.

405783249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29487.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 405783249 is about 20144.0623757970. The cubic root of 405783249 is about 740.3402677893.

The spelling of 405783249 in words is "four hundred five million, seven hundred eighty-three thousand, two hundred forty-nine".