47640041 has 4 divisors (see below), whose sum is σ = 47692800. Its totient is φ = 47587284.

The previous prime is 47640037. The next prime is 47640059. The reversal of 47640041 is 14004674.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14004674 = 2 ⋅7002337.

It is a cyclic number.

It is not a de Polignac number, because 47640041 - 2² = 47640037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47640031) 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 3 ways as a sum of consecutive naturals, for example, 25001 + ... + 26838.

It is an arithmetic number, because the mean of its divisors is an integer number (11923200).

Almost surely, 2^47640041 is an apocalyptic number.

It is an amenable number.

47640041 is a deficient number, since it is larger than the sum of its proper divisors (52759).

47640041 is an equidigital number, since it uses as much as digits as its factorization.

47640041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52758.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 47640041 is about 6902.1765407732. The cubic root of 47640041 is about 362.5133813530.

The spelling of 47640041 in words is "forty-seven million, six hundred forty thousand, forty-one".