47549969 has 4 divisors (see below), whose sum is σ = 50347044. Its totient is φ = 44752896.

The previous prime is 47549963. The next prime is 47550011. The reversal of 47549969 is 96994574.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21743569 + 25806400 = 4663^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 47549969 - 2²⁰ = 46501393 is a prime.

It is a super-2 number, since 2×47549969² = 4521999103801922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47549969.

It is not an unprimeable number, because it can be changed into a prime (47549963) 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, 1398512 + ... + 1398545.

It is an arithmetic number, because the mean of its divisors is an integer number (12586761).

Almost surely, 2^47549969 is an apocalyptic number.

It is an amenable number.

47549969 is a deficient number, since it is larger than the sum of its proper divisors (2797075).

47549969 is a wasteful number, since it uses less digits than its factorization.

47549969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797074.

The product of its digits is 2449440, while the sum is 53.

The square root of 47549969 is about 6895.6485554297. The cubic root of 47549969 is about 362.2847718012.

The spelling of 47549969 in words is "forty-seven million, five hundred forty-nine thousand, nine hundred sixty-nine".