404849 has 2 divisors, whose sum is σ = 404850. Its totient is φ = 404848.

The previous prime is 404843. The next prime is 404851. The reversal of 404849 is 948404.

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., 384400 + 20449 = 620^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 404849 - 2¹² = 400753 is a prime.

Together with 404851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202424 + 202425.

It is an arithmetic number, because the mean of its divisors is an integer number (202425).

2⁴⁰⁴⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

404849 is a deficient number, since it is larger than the sum of its proper divisors (1).

404849 is an equidigital number, since it uses as much as digits as its factorization.

404849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 404849 is about 636.2774552033. The cubic root of 404849 is about 73.9771660740.

The spelling of 404849 in words is "four hundred four thousand, eight hundred forty-nine".