40659951 has 8 divisors (see below), whose sum is σ = 54280240. Its totient is φ = 27073152.

The previous prime is 40659947. The next prime is 40659953. The reversal of 40659951 is 15995604.

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

It is not a de Polignac number, because 40659951 - 2² = 40659947 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 (40659953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386 + ... + 10503.

It is an arithmetic number, because the mean of its divisors is an integer number (6785030).

Almost surely, 2^40659951 is an apocalyptic number.

40659951 is a deficient number, since it is larger than the sum of its proper divisors (13620289).

40659951 is a wasteful number, since it uses less digits than its factorization.

40659951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16745.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 40659951 is about 6376.5155845493. The cubic root of 40659951 is about 343.8657731911.

The spelling of 40659951 in words is "forty million, six hundred fifty-nine thousand, nine hundred fifty-one".