1404450823 has 2 divisors, whose sum is σ = 1404450824. Its totient is φ = 1404450822.

The previous prime is 1404450799. The next prime is 1404450829. The reversal of 1404450823 is 3280544041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404450823 is a prime.

It is a super-2 number, since 2×1404450823² = 3944964228450754658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404450829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702225411 + 702225412.

It is an arithmetic number, because the mean of its divisors is an integer number (702225412).

Almost surely, 2^1404450823 is an apocalyptic number.

1404450823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404450823 is an equidigital number, since it uses as much as digits as its factorization.

1404450823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1404450823 is about 37476.0032954423. The cubic root of 1404450823 is about 1119.8731847806.

Adding to 1404450823 its reverse (3280544041), we get a palindrome (4684994864).

The spelling of 1404450823 in words is "one billion, four hundred four million, four hundred fifty thousand, eight hundred twenty-three".