405173493 has 6 divisors (see below), whose sum is σ = 585250614. Its totient is φ = 270115656.

The previous prime is 405173491. The next prime is 405173507. The reversal of 405173493 is 394371504.

It can be written as a sum of positive squares in only one way, i.e., 404733924 + 439569 = 20118^2 + 663^2 .

It is not a de Polignac number, because 405173493 - 2¹ = 405173491 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405173491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22509630 + ... + 22509647.

It is an arithmetic number, because the mean of its divisors is an integer number (97541769).

Almost surely, 2^405173493 is an apocalyptic number.

It is an amenable number.

405173493 is a deficient number, since it is larger than the sum of its proper divisors (180077121).

405173493 is a wasteful number, since it uses less digits than its factorization.

405173493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45019283 (or 45019280 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 405173493 is about 20128.9218042100. The cubic root of 405173493 is about 739.9692542619.

The spelling of 405173493 in words is "four hundred five million, one hundred seventy-three thousand, four hundred ninety-three".