404545429 has 2 divisors, whose sum is σ = 404545430. Its totient is φ = 404545428.

The previous prime is 404545391. The next prime is 404545451. The reversal of 404545429 is 924545404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285779025 + 118766404 = 16905^2 + 10898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404545429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404545489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202272714 + 202272715.

It is an arithmetic number, because the mean of its divisors is an integer number (202272715).

Almost surely, 2^404545429 is an apocalyptic number.

It is an amenable number.

404545429 is a deficient number, since it is larger than the sum of its proper divisors (1).

404545429 is an equidigital number, since it uses as much as digits as its factorization.

404545429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 404545429 is about 20113.3147193594. The cubic root of 404545429 is about 739.5867116377.

The spelling of 404545429 in words is "four hundred four million, five hundred forty-five thousand, four hundred twenty-nine".