405372005 has 16 divisors (see below), whose sum is σ = 505062000. Its totient is φ = 311969280.

The previous prime is 405371999. The next prime is 405372013. The reversal of 405372005 is 500273504.

It can be written as a sum of positive squares in 8 ways, for example, as 195364 + 405176641 = 442^2 + 20129^2 .

It is not a de Polignac number, because 405372005 - 2¹⁰ = 405370981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35771 + ... + 45719.

It is an arithmetic number, because the mean of its divisors is an integer number (31566375).

Almost surely, 2^405372005 is an apocalyptic number.

It is an amenable number.

405372005 is a deficient number, since it is larger than the sum of its proper divisors (99689995).

405372005 is a wasteful number, since it uses less digits than its factorization.

405372005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10264.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 405372005 is about 20133.8522146161. The cubic root of 405372005 is about 740.0900821673.

The spelling of 405372005 in words is "four hundred five million, three hundred seventy-two thousand, five".