405450113 has 4 divisors (see below), whose sum is σ = 405525588. Its totient is φ = 405374640.

The previous prime is 405450079. The next prime is 405450121. The reversal of 405450113 is 311054504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 377019889 + 28430224 = 19417^2 + 5332^2 .

It is a cyclic number.

It is not a de Polignac number, because 405450113 - 2¹⁸ = 405187969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405450193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29006 + ... + 40647.

It is an arithmetic number, because the mean of its divisors is an integer number (101381397).

Almost surely, 2^405450113 is an apocalyptic number.

It is an amenable number.

405450113 is a deficient number, since it is larger than the sum of its proper divisors (75475).

405450113 is an equidigital number, since it uses as much as digits as its factorization.

405450113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75474.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 405450113 is about 20135.7918394087. The cubic root of 405450113 is about 740.1376131948.

The spelling of 405450113 in words is "four hundred five million, four hundred fifty thousand, one hundred thirteen".