405230293 has 16 divisors (see below), whose sum is σ = 442350720. Its totient is φ = 368991936.

The previous prime is 405230279. The next prime is 405230297. The reversal of 405230293 is 392032504.

It is a cyclic number.

It is not a de Polignac number, because 405230293 - 2¹⁷ = 405099221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405230297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440488 + ... + 441406.

It is an arithmetic number, because the mean of its divisors is an integer number (27646920).

Almost surely, 2^405230293 is an apocalyptic number.

It is an amenable number.

405230293 is a deficient number, since it is larger than the sum of its proper divisors (37120427).

405230293 is a wasteful number, since it uses less digits than its factorization.

405230293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 405230293 is about 20130.3326599438. The cubic root of 405230293 is about 740.0038306351.

Adding to 405230293 its reverse (392032504), we get a palindrome (797262797).

The spelling of 405230293 in words is "four hundred five million, two hundred thirty thousand, two hundred ninety-three".