40013598 has 16 divisors (see below), whose sum is σ = 80119440. Its totient is φ = 13322496.

The previous prime is 40013593. The next prime is 40013627. The reversal of 40013598 is 89531004.

40013598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013593) by changing a digit.

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, 2638 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (5007465).

Almost surely, 2^40013598 is an apocalyptic number.

40013598 is an abundant number, since it is smaller than the sum of its proper divisors (40105842).

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

40013598 is a wasteful number, since it uses less digits than its factorization.

40013598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7691.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 40013598 is about 6325.6302452799. The cubic root of 40013598 is about 342.0339386996.

The spelling of 40013598 in words is "forty million, thirteen thousand, five hundred ninety-eight".