47622649 has 2 divisors, whose sum is σ = 47622650. Its totient is φ = 47622648.

The previous prime is 47622647. The next prime is 47622691. The reversal of 47622649 is 94622674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32661225 + 14961424 = 5715^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 47622649 - 2¹ = 47622647 is a prime.

Together with 47622647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47622643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23811324 + 23811325.

It is an arithmetic number, because the mean of its divisors is an integer number (23811325).

Almost surely, 2^47622649 is an apocalyptic number.

It is an amenable number.

47622649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47622649 is an equidigital number, since it uses as much as digits as its factorization.

47622649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 47622649 is about 6900.9165333309. The cubic root of 47622649 is about 362.4692616029.

The spelling of 47622649 in words is "forty-seven million, six hundred twenty-two thousand, six hundred forty-nine".