405403273 has 8 divisors (see below), whose sum is σ = 447857280. Its totient is φ = 363882480.

The previous prime is 405403231. The next prime is 405403279. The reversal of 405403273 is 372304504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405403273 - 2¹⁷ = 405272201 is a prime.

It is a super-2 number, since 2×405403273² = 328703627518225058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405403279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232390 + ... + 234127.

It is an arithmetic number, because the mean of its divisors is an integer number (55982160).

Almost surely, 2^405403273 is an apocalyptic number.

It is an amenable number.

405403273 is a deficient number, since it is larger than the sum of its proper divisors (42454007).

405403273 is a wasteful number, since it uses less digits than its factorization.

405403273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466607.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 405403273 is about 20134.6287028095. The cubic root of 405403273 is about 740.1091104026.

Adding to 405403273 its reverse (372304504), we get a palindrome (777707777).

The spelling of 405403273 in words is "four hundred five million, four hundred three thousand, two hundred seventy-three".