406453813 has 2 divisors, whose sum is σ = 406453814. Its totient is φ = 406453812.

The previous prime is 406453717. The next prime is 406453823. The reversal of 406453813 is 318354604.

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., 214271044 + 192182769 = 14638^2 + 13863^2 .

It is a cyclic number.

It is not a de Polignac number, because 406453813 - 2¹³ = 406445621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406453823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203226906 + 203226907.

It is an arithmetic number, because the mean of its divisors is an integer number (203226907).

Almost surely, 2^406453813 is an apocalyptic number.

It is an amenable number.

406453813 is a deficient number, since it is larger than the sum of its proper divisors (1).

406453813 is an equidigital number, since it uses as much as digits as its factorization.

406453813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 406453813 is about 20160.6997150397. The cubic root of 406453813 is about 740.7478518231.

The spelling of 406453813 in words is "four hundred six million, four hundred fifty-three thousand, eight hundred thirteen".