405448245 has 12 divisors (see below), whose sum is σ = 702777036. Its totient is φ = 216239040.

The previous prime is 405448237. The next prime is 405448259. The reversal of 405448245 is 542844504.

405448245 is a `hidden beast` number, since 405 + 4 + 4 + 8 + 245 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71216721 + 334231524 = 8439^2 + 18282^2 .

It is not a de Polignac number, because 405448245 - 2³ = 405448237 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4504936 + ... + 4505025.

It is an arithmetic number, because the mean of its divisors is an integer number (58564753).

Almost surely, 2^405448245 is an apocalyptic number.

405448245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

405448245 is a deficient number, since it is larger than the sum of its proper divisors (297328791).

405448245 is a wasteful number, since it uses less digits than its factorization.

405448245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009972 (or 9009969 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

The square root of 405448245 is about 20135.7454542910. The cubic root of 405448245 is about 740.1364765328.

The spelling of 405448245 in words is "four hundred five million, four hundred forty-eight thousand, two hundred forty-five".