405740045 has 16 divisors (see below), whose sum is σ = 499192320. Its totient is φ = 316419264.

The previous prime is 405740021. The next prime is 405740047. The reversal of 405740045 is 540047504.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405740045 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405740047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128951 + ... + 132059.

It is an arithmetic number, because the mean of its divisors is an integer number (31199520).

Almost surely, 2^405740045 is an apocalyptic number.

It is an amenable number.

405740045 is a deficient number, since it is larger than the sum of its proper divisors (93452275).

405740045 is a wasteful number, since it uses less digits than its factorization.

405740045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 405740045 is about 20142.9899716998. The cubic root of 405740045 is about 740.3139920240.

Adding to 405740045 its reverse (540047504), we get a palindrome (945787549).

The spelling of 405740045 in words is "four hundred five million, seven hundred forty thousand, forty-five".