40599040 has 40 divisors (see below), whose sum is σ = 97348680. Its totient is φ = 16238592.

The previous prime is 40599037. The next prime is 40599089. The reversal of 40599040 is 4099504.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 40598993 and 40599011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5370 + ... + 10489.

It is an arithmetic number, because the mean of its divisors is an integer number (2433717).

Almost surely, 2^40599040 is an apocalyptic number.

40599040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40599040 is an abundant number, since it is smaller than the sum of its proper divisors (56749640).

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

40599040 is an equidigital number, since it uses as much as digits as its factorization.

40599040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15882 (or 15866 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 40599040 is about 6371.7375966058. The cubic root of 40599040 is about 343.6939769858.

The spelling of 40599040 in words is "forty million, five hundred ninety-nine thousand, forty".