406284881 has 2 divisors, whose sum is σ = 406284882. Its totient is φ = 406284880.

The previous prime is 406284799. The next prime is 406284883. The reversal of 406284881 is 188482604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246490000 + 159794881 = 15700^2 + 12641^2 .

It is a cyclic number.

It is not a de Polignac number, because 406284881 - 2¹⁴ = 406268497 is a prime.

It is a super-2 number, since 2×406284881² = 330134809058368322, which contains 22 as substring.

Together with 406284883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (406284883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203142440 + 203142441.

It is an arithmetic number, because the mean of its divisors is an integer number (203142441).

Almost surely, 2^406284881 is an apocalyptic number.

It is an amenable number.

406284881 is a deficient number, since it is larger than the sum of its proper divisors (1).

406284881 is an equidigital number, since it uses as much as digits as its factorization.

406284881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 41.

The square root of 406284881 is about 20156.5096432889. The cubic root of 406284881 is about 740.6452133825.

The spelling of 406284881 in words is "four hundred six million, two hundred eighty-four thousand, eight hundred eighty-one".