404854649 has 2 divisors, whose sum is σ = 404854650. Its totient is φ = 404854648.

The previous prime is 404854627. The next prime is 404854691. The reversal of 404854649 is 946458404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242113600 + 162741049 = 15560^2 + 12757^2 .

It is a cyclic number.

It is not a de Polignac number, because 404854649 - 2²⁴ = 388077433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404854249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202427324 + 202427325.

It is an arithmetic number, because the mean of its divisors is an integer number (202427325).

Almost surely, 2^404854649 is an apocalyptic number.

It is an amenable number.

404854649 is a deficient number, since it is larger than the sum of its proper divisors (1).

404854649 is an equidigital number, since it uses as much as digits as its factorization.

404854649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 404854649 is about 20121.0001987973. Note that the first 3 decimals coincide. The cubic root of 404854649 is about 739.7751014885.

The spelling of 404854649 in words is "four hundred four million, eight hundred fifty-four thousand, six hundred forty-nine".