404041481 has 2 divisors, whose sum is σ = 404041482. Its totient is φ = 404041480.

The previous prime is 404041457. The next prime is 404041489. The reversal of 404041481 is 184140404.

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., 268435456 + 135606025 = 16384^2 + 11645^2 .

It is a cyclic number.

It is not a de Polignac number, because 404041481 - 2¹⁰ = 404040457 is a prime.

It is a super-2 number, since 2×404041481² = 326499036737346722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404041481.

It is not a weakly prime, because it can be changed into another prime (404041489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202020740 + 202020741.

It is an arithmetic number, because the mean of its divisors is an integer number (202020741).

Almost surely, 2^404041481 is an apocalyptic number.

It is an amenable number.

404041481 is a deficient number, since it is larger than the sum of its proper divisors (1).

404041481 is an equidigital number, since it uses as much as digits as its factorization.

404041481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 404041481 is about 20100.7830941981. The cubic root of 404041481 is about 739.2794794627.

Adding to 404041481 its reverse (184140404), we get a palindrome (588181885).

The spelling of 404041481 in words is "four hundred four million, forty-one thousand, four hundred eighty-one".