406449243 has 24 divisors (see below), whose sum is σ = 622408176. Its totient is φ = 254707200.

The previous prime is 406449221. The next prime is 406449259. The reversal of 406449243 is 342944604.

406449243 is a `hidden beast` number, since 4 + 0 + 644 + 9 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 406449243 - 2¹⁸ = 406187099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406449198 and 406449207.

It is not an unprimeable number, because it can be changed into a prime (406449343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201108 + ... + 203118.

It is an arithmetic number, because the mean of its divisors is an integer number (25933674).

Almost surely, 2^406449243 is an apocalyptic number.

406449243 is a deficient number, since it is larger than the sum of its proper divisors (215958933).

406449243 is a wasteful number, since it uses less digits than its factorization.

406449243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 406449243 is about 20160.5863754009. The cubic root of 406449243 is about 740.7450755910.

The spelling of 406449243 in words is "four hundred six million, four hundred forty-nine thousand, two hundred forty-three".