40646249 has 8 divisors (see below), whose sum is σ = 46491648. Its totient is φ = 34810560.

The previous prime is 40646237. The next prime is 40646299. The reversal of 40646249 is 94264604.

40646249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-40646249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40646299) 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, 13784 + ... + 16470.

It is an arithmetic number, because the mean of its divisors is an integer number (5811456).

Almost surely, 2^40646249 is an apocalyptic number.

It is an amenable number.

40646249 is a deficient number, since it is larger than the sum of its proper divisors (5845399).

40646249 is a wasteful number, since it uses less digits than its factorization.

40646249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 40646249 is about 6375.4410827801. The cubic root of 40646249 is about 343.8271424003.

The spelling of 40646249 in words is "forty million, six hundred forty-six thousand, two hundred forty-nine".