47971199 has 4 divisors (see below), whose sum is σ = 48075720. Its totient is φ = 47866680.

The previous prime is 47971177. The next prime is 47971207. The reversal of 47971199 is 99117974.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47971199 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 (47971109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51569 + ... + 52490.

It is an arithmetic number, because the mean of its divisors is an integer number (12018930).

Almost surely, 2^47971199 is an apocalyptic number.

47971199 is a deficient number, since it is larger than the sum of its proper divisors (104521).

47971199 is a wasteful number, since it uses less digits than its factorization.

47971199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104520.

The product of its digits is 142884, while the sum is 47.

The square root of 47971199 is about 6926.1243852533. The cubic root of 47971199 is about 363.3514166761.

The spelling of 47971199 in words is "forty-seven million, nine hundred seventy-one thousand, one hundred ninety-nine".