404021273 has 2 divisors, whose sum is σ = 404021274. Its totient is φ = 404021272.

The previous prime is 404021251. The next prime is 404021329. The reversal of 404021273 is 372120404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398082304 + 5938969 = 19952^2 + 2437^2 .

It is a cyclic number.

It is not a de Polignac number, because 404021273 - 2⁸ = 404021017 is a prime.

It is not a weakly prime, because it can be changed into another prime (404021213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202010636 + 202010637.

It is an arithmetic number, because the mean of its divisors is an integer number (202010637).

Almost surely, 2^404021273 is an apocalyptic number.

It is an amenable number.

404021273 is a deficient number, since it is larger than the sum of its proper divisors (1).

404021273 is an equidigital number, since it uses as much as digits as its factorization.

404021273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 404021273 is about 20100.2804209295. The cubic root of 404021273 is about 739.2671543183.

Adding to 404021273 its reverse (372120404), we get a palindrome (776141677).

The spelling of 404021273 in words is "four hundred four million, twenty-one thousand, two hundred seventy-three".