47988949 has 2 divisors, whose sum is σ = 47988950. Its totient is φ = 47988948.

The previous prime is 47988947. The next prime is 47988973. The reversal of 47988949 is 94988974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 5673924 = 6505^2 + 2382^2 .

It is a cyclic number.

It is not a de Polignac number, because 47988949 - 2¹ = 47988947 is a prime.

It is a super-2 number, since 2×47988949² = 4605878452249202, which contains 22 as substring.

Together with 47988947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 47988893 and 47988902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47988947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23994474 + 23994475.

It is an arithmetic number, because the mean of its divisors is an integer number (23994475).

Almost surely, 2^47988949 is an apocalyptic number.

It is an amenable number.

47988949 is a deficient number, since it is larger than the sum of its proper divisors (1).

47988949 is an equidigital number, since it uses as much as digits as its factorization.

47988949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 58.

The square root of 47988949 is about 6927.4056471380. The cubic root of 47988949 is about 363.3962261484.

The spelling of 47988949 in words is "forty-seven million, nine hundred eighty-eight thousand, nine hundred forty-nine".