406254769 has 2 divisors, whose sum is σ = 406254770. Its totient is φ = 406254768.

The previous prime is 406254743. The next prime is 406254791. The reversal of 406254769 is 967452604.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220968225 + 185286544 = 14865^2 + 13612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406254769 is a prime.

It is a super-2 number, since 2×406254769² = 330085874670486722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406254869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203127384 + 203127385.

It is an arithmetic number, because the mean of its divisors is an integer number (203127385).

Almost surely, 2^406254769 is an apocalyptic number.

It is an amenable number.

406254769 is a deficient number, since it is larger than the sum of its proper divisors (1).

406254769 is an equidigital number, since it uses as much as digits as its factorization.

406254769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 406254769 is about 20155.7626747290. The cubic root of 406254769 is about 740.6269151713.

The spelling of 406254769 in words is "four hundred six million, two hundred fifty-four thousand, seven hundred sixty-nine".