47972969 has 4 divisors (see below), whose sum is σ = 52334160. Its totient is φ = 43611780.

The previous prime is 47972957. The next prime is 47972983. The reversal of 47972969 is 96927974.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47972969 is a prime.

It is a super-2 number, since 2×47972969² = 4602811509349922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47972969.

It is not an unprimeable number, because it can be changed into a prime (47972569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180579 + ... + 2180600.

It is an arithmetic number, because the mean of its divisors is an integer number (13083540).

Almost surely, 2^47972969 is an apocalyptic number.

It is an amenable number.

47972969 is a deficient number, since it is larger than the sum of its proper divisors (4361191).

47972969 is a wasteful number, since it uses less digits than its factorization.

47972969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361190.

The product of its digits is 1714608, while the sum is 53.

The square root of 47972969 is about 6926.2521611619. The cubic root of 47972969 is about 363.3558854971.

The spelling of 47972969 in words is "forty-seven million, nine hundred seventy-two thousand, nine hundred sixty-nine".