40108649 has 8 divisors (see below), whose sum is σ = 46070400. Its totient is φ = 34204896.

The previous prime is 40108643. The next prime is 40108687. The reversal of 40108649 is 94680104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40108649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40108643) 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, 13004 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (5758800).

Almost surely, 2^40108649 is an apocalyptic number.

It is an amenable number.

40108649 is a deficient number, since it is larger than the sum of its proper divisors (5961751).

40108649 is a wasteful number, since it uses less digits than its factorization.

40108649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28999.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40108649 is about 6333.1389531574. The cubic root of 40108649 is about 342.3045546966.

The spelling of 40108649 in words is "forty million, one hundred eight thousand, six hundred forty-nine".