406494271 has 2 divisors, whose sum is σ = 406494272. Its totient is φ = 406494270.

The previous prime is 406494233. The next prime is 406494287. The reversal of 406494271 is 172494604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406494271 - 2²³ = 398105663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406494271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406494071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203247135 + 203247136.

It is an arithmetic number, because the mean of its divisors is an integer number (203247136).

Almost surely, 2^406494271 is an apocalyptic number.

406494271 is a deficient number, since it is larger than the sum of its proper divisors (1).

406494271 is an equidigital number, since it uses as much as digits as its factorization.

406494271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 406494271 is about 20161.7030778652. The cubic root of 406494271 is about 740.7724287707.

The spelling of 406494271 in words is "four hundred six million, four hundred ninety-four thousand, two hundred seventy-one".