47122939 has 2 divisors, whose sum is σ = 47122940. Its totient is φ = 47122938.

The previous prime is 47122903. The next prime is 47122961. The reversal of 47122939 is 93922174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47122939 - 2¹¹ = 47120891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47122898 and 47122907.

It is not a weakly prime, because it can be changed into another prime (47122979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23561469 + 23561470.

It is an arithmetic number, because the mean of its divisors is an integer number (23561470).

Almost surely, 2^47122939 is an apocalyptic number.

47122939 is a deficient number, since it is larger than the sum of its proper divisors (1).

47122939 is an equidigital number, since it uses as much as digits as its factorization.

47122939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 47122939 is about 6864.6149928456. The cubic root of 47122939 is about 361.1969904218.

The spelling of 47122939 in words is "forty-seven million, one hundred twenty-two thousand, nine hundred thirty-nine".