47642791 has 8 divisors (see below), whose sum is σ = 55920800. Its totient is φ = 39732768.

The previous prime is 47642783. The next prime is 47642797. The reversal of 47642791 is 19724674.

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

It is a cyclic number.

It is not a de Polignac number, because 47642791 - 2³ = 47642783 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 (47642797) 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, 91716 + ... + 92233.

It is an arithmetic number, because the mean of its divisors is an integer number (6990100).

Almost surely, 2^47642791 is an apocalyptic number.

47642791 is a deficient number, since it is larger than the sum of its proper divisors (8278009).

47642791 is a wasteful number, since it uses less digits than its factorization.

47642791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183993.

The product of its digits is 84672, while the sum is 40.

The square root of 47642791 is about 6902.3757504210. The cubic root of 47642791 is about 362.5203565263.

The spelling of 47642791 in words is "forty-seven million, six hundred forty-two thousand, seven hundred ninety-one".