47490449 has 2 divisors, whose sum is σ = 47490450. Its totient is φ = 47490448.

The previous prime is 47490413. The next prime is 47490451. The reversal of 47490449 is 94409474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46144849 + 1345600 = 6793^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 47490449 - 2¹² = 47486353 is a prime.

Together with 47490451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47490479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23745224 + 23745225.

It is an arithmetic number, because the mean of its divisors is an integer number (23745225).

Almost surely, 2^47490449 is an apocalyptic number.

It is an amenable number.

47490449 is a deficient number, since it is larger than the sum of its proper divisors (1).

47490449 is an equidigital number, since it uses as much as digits as its factorization.

47490449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 47490449 is about 6891.3314388440. The cubic root of 47490449 is about 362.1335470758.

The spelling of 47490449 in words is "forty-seven million, four hundred ninety thousand, four hundred forty-nine".