47990417 has 2 divisors, whose sum is σ = 47990418. Its totient is φ = 47990416.

The previous prime is 47990401. The next prime is 47990461. The reversal of 47990417 is 71409974.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24960016 + 23030401 = 4996^2 + 4799^2 .

It is a cyclic number.

It is not a de Polignac number, because 47990417 - 2⁴ = 47990401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47990497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23995208 + 23995209.

It is an arithmetic number, because the mean of its divisors is an integer number (23995209).

Almost surely, 2^47990417 is an apocalyptic number.

It is an amenable number.

47990417 is a deficient number, since it is larger than the sum of its proper divisors (1).

47990417 is an equidigital number, since it uses as much as digits as its factorization.

47990417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 47990417 is about 6927.5116022999. The cubic root of 47990417 is about 363.3999315864.

The spelling of 47990417 in words is "forty-seven million, nine hundred ninety thousand, four hundred seventeen".