47640961 has 8 divisors (see below), whose sum is σ = 50212800. Its totient is φ = 45075600.

The previous prime is 47640949. The next prime is 47640977. The reversal of 47640961 is 16904674.

47640961 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 not a de Polignac number, because 47640961 - 2⁷ = 47640833 is a prime.

It is a super-2 number, since 2×47640961² = 4539322330007042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47640961.

It is not an unprimeable number, because it can be changed into a prime (47640991) 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, 24111 + ... + 26011.

It is an arithmetic number, because the mean of its divisors is an integer number (6276600).

Almost surely, 2^47640961 is an apocalyptic number.

It is an amenable number.

47640961 is a deficient number, since it is larger than the sum of its proper divisors (2571839).

47640961 is a wasteful number, since it uses less digits than its factorization.

47640961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 47640961 is about 6902.2431860954. The cubic root of 47640961 is about 362.5157148954.

The spelling of 47640961 in words is "forty-seven million, six hundred forty thousand, nine hundred sixty-one".