404123453 has 2 divisors, whose sum is σ = 404123454. Its totient is φ = 404123452.

The previous prime is 404123449. The next prime is 404123459. The reversal of 404123453 is 354321404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 267747769 + 136375684 = 16363^2 + 11678^2 .

It is a cyclic number.

It is not a de Polignac number, because 404123453 - 2² = 404123449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404123459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202061726 + 202061727.

It is an arithmetic number, because the mean of its divisors is an integer number (202061727).

Almost surely, 2^404123453 is an apocalyptic number.

It is an amenable number.

404123453 is a deficient number, since it is larger than the sum of its proper divisors (1).

404123453 is an equidigital number, since it uses as much as digits as its factorization.

404123453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 404123453 is about 20102.8220158265. The cubic root of 404123453 is about 739.3294711283.

Adding to 404123453 its reverse (354321404), we get a palindrome (758444857).

The spelling of 404123453 in words is "four hundred four million, one hundred twenty-three thousand, four hundred fifty-three".