404024641 has 2 divisors, whose sum is σ = 404024642. Its totient is φ = 404024640.

The previous prime is 404024639. The next prime is 404024651. The reversal of 404024641 is 146420404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404010000 + 14641 = 20100^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 404024641 - 2¹ = 404024639 is a prime.

Together with 404024639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (404024611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202012320 + 202012321.

It is an arithmetic number, because the mean of its divisors is an integer number (202012321).

Almost surely, 2^404024641 is an apocalyptic number.

It is an amenable number.

404024641 is a deficient number, since it is larger than the sum of its proper divisors (1).

404024641 is an equidigital number, since it uses as much as digits as its factorization.

404024641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 404024641 is about 20100.3642006805. The cubic root of 404024641 is about 739.2692085376.

The spelling of 404024641 in words is "four hundred four million, twenty-four thousand, six hundred forty-one".