40409616 has 80 divisors (see below), whose sum is σ = 116103680. Its totient is φ = 12026880.

The previous prime is 40409581. The next prime is 40409651. The reversal of 40409616 is 61690404.

It is an interprime number because it is at equal distance from previous prime (40409581) and next prime (40409651).

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, 18300 + ... + 20388.

It is an arithmetic number, because the mean of its divisors is an integer number (1451296).

Almost surely, 2^40409616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40409616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58051840).

40409616 is an abundant number, since it is smaller than the sum of its proper divisors (75694064).

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

40409616 is a wasteful number, since it uses less digits than its factorization.

40409616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 40409616 is about 6356.8558265860. The cubic root of 40409616 is about 343.1586161869.

The spelling of 40409616 in words is "forty million, four hundred nine thousand, six hundred sixteen".