47279191 has 16 divisors (see below), whose sum is σ = 51000768. Its totient is φ = 43718400.

The previous prime is 47279161. The next prime is 47279213. The reversal of 47279191 is 19197274.

It is not a de Polignac number, because 47279191 - 2¹⁷ = 47148119 is a prime.

It is a super-3 number, since 3×47279191³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47279161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170545 + ... + 170821.

It is an arithmetic number, because the mean of its divisors is an integer number (3187548).

Almost surely, 2^47279191 is an apocalyptic number.

47279191 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

47279191 is a deficient number, since it is larger than the sum of its proper divisors (3721577).

47279191 is a wasteful number, since it uses less digits than its factorization.

47279191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522.

The product of its digits is 31752, while the sum is 40.

The square root of 47279191 is about 6875.9865473981. The cubic root of 47279191 is about 361.5957734670.

The spelling of 47279191 in words is "forty-seven million, two hundred seventy-nine thousand, one hundred ninety-one".