47123969 has 2 divisors, whose sum is σ = 47123970. Its totient is φ = 47123968.

The previous prime is 47123963. The next prime is 47124013. The reversal of 47123969 is 96932174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32069569 + 15054400 = 5663^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 47123969 - 2⁴ = 47123953 is a prime.

It is a super-2 number, since 2×47123969² = 4441336908625922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47123963) 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 as a sum of consecutive naturals, namely, 23561984 + 23561985.

It is an arithmetic number, because the mean of its divisors is an integer number (23561985).

Almost surely, 2^47123969 is an apocalyptic number.

It is an amenable number.

47123969 is a deficient number, since it is larger than the sum of its proper divisors (1).

47123969 is an equidigital number, since it uses as much as digits as its factorization.

47123969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 47123969 is about 6864.6900148514. The cubic root of 47123969 is about 361.1996220502.

The spelling of 47123969 in words is "forty-seven million, one hundred twenty-three thousand, nine hundred sixty-nine".