404354641 has 2 divisors, whose sum is σ = 404354642. Its totient is φ = 404354640.

The previous prime is 404354633. The next prime is 404354653. The reversal of 404354641 is 146453404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356454400 + 47900241 = 18880^2 + 6921^2 .

It is a cyclic number.

It is not a de Polignac number, because 404354641 - 2³ = 404354633 is a prime.

It is not a weakly prime, because it can be changed into another prime (404354141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202177320 + 202177321.

It is an arithmetic number, because the mean of its divisors is an integer number (202177321).

Almost surely, 2^404354641 is an apocalyptic number.

It is an amenable number.

404354641 is a deficient number, since it is larger than the sum of its proper divisors (1).

404354641 is an equidigital number, since it uses as much as digits as its factorization.

404354641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 404354641 is about 20108.5713316486. The cubic root of 404354641 is about 739.4704276579.

The spelling of 404354641 in words is "four hundred four million, three hundred fifty-four thousand, six hundred forty-one".