406488457 has 2 divisors, whose sum is σ = 406488458. Its totient is φ = 406488456.

The previous prime is 406488449. The next prime is 406488493. The reversal of 406488457 is 754884604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402564096 + 3924361 = 20064^2 + 1981^2 .

It is a cyclic number.

It is not a de Polignac number, because 406488457 - 2³ = 406488449 is a prime.

It is not a weakly prime, because it can be changed into another prime (406488427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203244228 + 203244229.

It is an arithmetic number, because the mean of its divisors is an integer number (203244229).

Almost surely, 2^406488457 is an apocalyptic number.

It is an amenable number.

406488457 is a deficient number, since it is larger than the sum of its proper divisors (1).

406488457 is an equidigital number, since it uses as much as digits as its factorization.

406488457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 860160, while the sum is 46.

The square root of 406488457 is about 20161.5588931015. The cubic root of 406488457 is about 740.7688970511.

The spelling of 406488457 in words is "four hundred six million, four hundred eighty-eight thousand, four hundred fifty-seven".