47843969 has 2 divisors, whose sum is σ = 47843970. Its totient is φ = 47843968.

The previous prime is 47843959. The next prime is 47844019. The reversal of 47843969 is 96934874.

It is an a-pointer prime, because the next prime (47844019) can be obtained adding 47843969 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27952369 + 19891600 = 5287^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 47843969 - 2⁴ = 47843953 is a prime.

It is a super-2 number, since 2×47843969² = 4578090739345922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47843909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23921984 + 23921985.

It is an arithmetic number, because the mean of its divisors is an integer number (23921985).

Almost surely, 2^47843969 is an apocalyptic number.

It is an amenable number.

47843969 is a deficient number, since it is larger than the sum of its proper divisors (1).

47843969 is an equidigital number, since it uses as much as digits as its factorization.

47843969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 47843969 is about 6916.9334968612. The cubic root of 47843969 is about 363.0299034072.

The spelling of 47843969 in words is "forty-seven million, eight hundred forty-three thousand, nine hundred sixty-nine".