404116501 has 2 divisors, whose sum is σ = 404116502. Its totient is φ = 404116500.

The previous prime is 404116487. The next prime is 404116511. The reversal of 404116501 is 105611404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328878225 + 75238276 = 18135^2 + 8674^2 .

It is a cyclic number.

It is not a de Polignac number, because 404116501 - 2⁹ = 404115989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404116511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202058250 + 202058251.

It is an arithmetic number, because the mean of its divisors is an integer number (202058251).

Almost surely, 2^404116501 is an apocalyptic number.

It is an amenable number.

404116501 is a deficient number, since it is larger than the sum of its proper divisors (1).

404116501 is an equidigital number, since it uses as much as digits as its factorization.

404116501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 404116501 is about 20102.6491040360. The cubic root of 404116501 is about 739.3252316251.

Adding to 404116501 its reverse (105611404), we get a palindrome (509727905).

The spelling of 404116501 in words is "four hundred four million, one hundred sixteen thousand, five hundred one".