404401091273 has 2 divisors, whose sum is σ = 404401091274. Its totient is φ = 404401091272.

The previous prime is 404401091267. The next prime is 404401091299. The reversal of 404401091273 is 372190104404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218470238464 + 185930852809 = 467408^2 + 431197^2 .

It is a cyclic number.

It is not a de Polignac number, because 404401091273 - 2²⁴ = 404384314057 is a prime.

It is not a weakly prime, because it can be changed into another prime (404401091573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202200545636 + 202200545637.

It is an arithmetic number, because the mean of its divisors is an integer number (202200545637).

Almost surely, 2^404401091273 is an apocalyptic number.

It is an amenable number.

404401091273 is a deficient number, since it is larger than the sum of its proper divisors (1).

404401091273 is an equidigital number, since it uses as much as digits as its factorization.

404401091273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

Adding to 404401091273 its reverse (372190104404), we get a palindrome (776591195677).

The spelling of 404401091273 in words is "four hundred four billion, four hundred one million, ninety-one thousand, two hundred seventy-three".