406223487 has 12 divisors (see below), whose sum is σ = 592817680. Its totient is φ = 268023168.

The previous prime is 406223471. The next prime is 406223509. The reversal of 406223487 is 784322604.

It is not a de Polignac number, because 406223487 - 2⁴ = 406223471 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 (406223417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231787 + ... + 233532.

Almost surely, 2^406223487 is an apocalyptic number.

406223487 is a deficient number, since it is larger than the sum of its proper divisors (186594193).

406223487 is a wasteful number, since it uses less digits than its factorization.

406223487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465422 (or 465419 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 406223487 is about 20154.9866534315. The cubic root of 406223487 is about 740.6079050266.

The spelling of 406223487 in words is "four hundred six million, two hundred twenty-three thousand, four hundred eighty-seven".