409245673 has 2 divisors, whose sum is σ = 409245674. Its totient is φ = 409245672.

The previous prime is 409245667. The next prime is 409245679. The reversal of 409245673 is 376542904.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (409245667) and next prime (409245679).

It can be written as a sum of positive squares in only one way, i.e., 363588624 + 45657049 = 19068^2 + 6757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409245673 is a prime.

It is not a weakly prime, because it can be changed into another prime (409245679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204622836 + 204622837.

It is an arithmetic number, because the mean of its divisors is an integer number (204622837).

Almost surely, 2^409245673 is an apocalyptic number.

It is an amenable number.

409245673 is a deficient number, since it is larger than the sum of its proper divisors (1).

409245673 is an equidigital number, since it uses as much as digits as its factorization.

409245673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 409245673 is about 20229.8213783513. The cubic root of 409245673 is about 742.4400057335.

It can be divided in two parts, 4092456 and 73, that added together give a square (4092529 = 2023²).

The spelling of 409245673 in words is "four hundred nine million, two hundred forty-five thousand, six hundred seventy-three".