404148461 has 2 divisors, whose sum is σ = 404148462. Its totient is φ = 404148460.

The previous prime is 404148421. The next prime is 404148467. The reversal of 404148461 is 164841404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333756361 + 70392100 = 18269^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 404148461 - 2¹⁰ = 404147437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404148467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202074230 + 202074231.

It is an arithmetic number, because the mean of its divisors is an integer number (202074231).

Almost surely, 2^404148461 is an apocalyptic number.

It is an amenable number.

404148461 is a deficient number, since it is larger than the sum of its proper divisors (1).

404148461 is an equidigital number, since it uses as much as digits as its factorization.

404148461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 404148461 is about 20103.4440084280. Note that the first 3 decimals coincide. The cubic root of 404148461 is about 739.3447212290.

Adding to 404148461 its reverse (164841404), we get a palindrome (568989865).

The spelling of 404148461 in words is "four hundred four million, one hundred forty-eight thousand, four hundred sixty-one".