40606440 has 64 divisors (see below), whose sum is σ = 139224960. Its totient is φ = 9281280.

The previous prime is 40606403. The next prime is 40606451. The reversal of 40606440 is 4460604.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40606440.

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, 23331 + ... + 25010.

It is an arithmetic number, because the mean of its divisors is an integer number (2175390).

Almost surely, 2^40606440 is an apocalyptic number.

40606440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40606440 is an abundant number, since it is smaller than the sum of its proper divisors (98618520).

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

40606440 is a wasteful number, since it uses less digits than its factorization.

40606440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48362 (or 48358 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40606440 is about 6372.3182594720. The cubic root of 40606440 is about 343.7148574542.

The spelling of 40606440 in words is "forty million, six hundred six thousand, four hundred forty".