40689535 has 8 divisors (see below), whose sum is σ = 48902256. Its totient is φ = 32501760.

The previous prime is 40689497. The next prime is 40689557. The reversal of 40689535 is 53598604.

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

It is not a de Polignac number, because 40689535 - 2¹³ = 40681343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434 + ... + 9343.

It is an arithmetic number, because the mean of its divisors is an integer number (6112782).

Almost surely, 2^40689535 is an apocalyptic number.

40689535 is a deficient number, since it is larger than the sum of its proper divisors (8212721).

40689535 is a wasteful number, since it uses less digits than its factorization.

40689535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 40689535 is about 6378.8349249687. The cubic root of 40689535 is about 343.9491513763.

The spelling of 40689535 in words is "forty million, six hundred eighty-nine thousand, five hundred thirty-five".