406950389 has 2 divisors, whose sum is σ = 406950390. Its totient is φ = 406950388.

The previous prime is 406950367. The next prime is 406950413. The reversal of 406950389 is 983059604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345327889 + 61622500 = 18583^2 + 7850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406950389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406950329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203475194 + 203475195.

It is an arithmetic number, because the mean of its divisors is an integer number (203475195).

Almost surely, 2^406950389 is an apocalyptic number.

It is an amenable number.

406950389 is a deficient number, since it is larger than the sum of its proper divisors (1).

406950389 is an equidigital number, since it uses as much as digits as its factorization.

406950389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 406950389 is about 20173.0114013749. The cubic root of 406950389 is about 741.0493931839.

The spelling of 406950389 in words is "four hundred six million, nine hundred fifty thousand, three hundred eighty-nine".