8540408 has 8 divisors (see below), whose sum is σ = 16013280. Its totient is φ = 4270200.

The previous prime is 8540401. The next prime is 8540431. The reversal of 8540408 is 8040458.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533768 + ... + 533783.

It is an arithmetic number, because the mean of its divisors is an integer number (2001660).

Almost surely, 2^8540408 is an apocalyptic number.

It is an amenable number.

8540408 is a deficient number, since it is larger than the sum of its proper divisors (7472872).

8540408 is a wasteful number, since it uses less digits than its factorization.

8540408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067557 (or 1067553 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 8540408 is about 2922.3976457697. The cubic root of 8540408 is about 204.4056391202.

The spelling of 8540408 in words is "eight million, five hundred forty thousand, four hundred eight".