408974245 has 4 divisors (see below), whose sum is σ = 490769100. Its totient is φ = 327179392.

The previous prime is 408974243. The next prime is 408974257. The reversal of 408974245 is 542479804.

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 159112996 + 249861249 = 12614^2 + 15807^2 .

It is a cyclic number.

It is not a de Polignac number, because 408974245 - 2¹ = 408974243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408974243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40897420 + ... + 40897429.

It is an arithmetic number, because the mean of its divisors is an integer number (122692275).

Almost surely, 2^408974245 is an apocalyptic number.

It is an amenable number.

408974245 is a deficient number, since it is larger than the sum of its proper divisors (81794855).

408974245 is an equidigital number, since it uses as much as digits as its factorization.

408974245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81794854.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 408974245 is about 20223.1116547380. Note that the first 3 decimals coincide. The cubic root of 408974245 is about 742.2758308565.

The spelling of 408974245 in words is "four hundred eight million, nine hundred seventy-four thousand, two hundred forty-five".