406782249 has 8 divisors (see below), whose sum is σ = 546278880. Its totient is φ = 269236896.

The previous prime is 406782241. The next prime is 406782263. The reversal of 406782249 is 942287604.

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

It is not a de Polignac number, because 406782249 - 2³ = 406782241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406782249.

It is not an unprimeable number, because it can be changed into a prime (406782241) 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, 487332 + ... + 488165.

It is an arithmetic number, because the mean of its divisors is an integer number (68284860).

Almost surely, 2^406782249 is an apocalyptic number.

It is an amenable number.

406782249 is a deficient number, since it is larger than the sum of its proper divisors (139496631).

406782249 is a wasteful number, since it uses less digits than its factorization.

406782249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975639.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 406782249 is about 20168.8435216301. The cubic root of 406782249 is about 740.9473191452.

The spelling of 406782249 in words is "four hundred six million, seven hundred eighty-two thousand, two hundred forty-nine".