409373540 has 24 divisors (see below), whose sum is σ = 863291520. Its totient is φ = 163062368.

The previous prime is 409373519. The next prime is 409373579. The reversal of 409373540 is 45373904.

It is a self number, because there is not a number n which added to its sum of digits gives 409373540.

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 7 ways as a sum of consecutive naturals, for example, 38042 + ... + 47601.

It is an arithmetic number, because the mean of its divisors is an integer number (35970480).

Almost surely, 2^409373540 is an apocalyptic number.

It is an amenable number.

409373540 is an abundant number, since it is smaller than the sum of its proper divisors (453917980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409373540 is a wasteful number, since it uses less digits than its factorization.

409373540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85891 (or 85889 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 409373540 is about 20232.9814906256. The cubic root of 409373540 is about 742.5173217134.

The spelling of 409373540 in words is "four hundred nine million, three hundred seventy-three thousand, five hundred forty".