47169949 has 2 divisors, whose sum is σ = 47169950. Its totient is φ = 47169948.

The previous prime is 47169937. The next prime is 47170009. The reversal of 47169949 is 94996174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45657049 + 1512900 = 6757^2 + 1230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47169949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47169349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23584974 + 23584975.

It is an arithmetic number, because the mean of its divisors is an integer number (23584975).

Almost surely, 2^47169949 is an apocalyptic number.

It is an amenable number.

47169949 is a deficient number, since it is larger than the sum of its proper divisors (1).

47169949 is an equidigital number, since it uses as much as digits as its factorization.

47169949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 47169949 is about 6868.0382206275. The cubic root of 47169949 is about 361.3170609410.

The spelling of 47169949 in words is "forty-seven million, one hundred sixty-nine thousand, nine hundred forty-nine".