40585989 has 8 divisors (see below), whose sum is σ = 54239680. Its totient is φ = 26994816.

The previous prime is 40585981. The next prime is 40585991. The reversal of 40585989 is 98958504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40585989 - 2³ = 40585981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40585981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14092 + ... + 16725.

It is an arithmetic number, because the mean of its divisors is an integer number (6779960).

Almost surely, 2^40585989 is an apocalyptic number.

It is an amenable number.

40585989 is a deficient number, since it is larger than the sum of its proper divisors (13653691).

40585989 is a wasteful number, since it uses less digits than its factorization.

40585989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31259.

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 40585989 is about 6370.7133823458. The cubic root of 40585989 is about 343.6571449915.

The spelling of 40585989 in words is "forty million, five hundred eighty-five thousand, nine hundred eighty-nine".