47982991 has 8 divisors (see below), whose sum is σ = 57222144. Its totient is φ = 39339960.

The previous prime is 47982983. The next prime is 47983003. The reversal of 47982991 is 19928974.

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 47982991 - 2³ = 47982983 is a prime.

It is a super-4 number, since 4×47982991⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47982901) 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, 148855 + ... + 149176.

It is an arithmetic number, because the mean of its divisors is an integer number (7152768).

Almost surely, 2^47982991 is an apocalyptic number.

47982991 is a deficient number, since it is larger than the sum of its proper divisors (9239153).

47982991 is a wasteful number, since it uses less digits than its factorization.

47982991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298061.

The product of its digits is 326592, while the sum is 49.

The square root of 47982991 is about 6926.9756026711. The cubic root of 47982991 is about 363.3811865448.

The spelling of 47982991 in words is "forty-seven million, nine hundred eighty-two thousand, nine hundred ninety-one".