47998961 has 2 divisors, whose sum is σ = 47998962. Its totient is φ = 47998960.

The previous prime is 47998957. The next prime is 47998963. The reversal of 47998961 is 16989974.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 19855936 = 5305^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 47998961 - 2² = 47998957 is a prime.

Together with 47998963, 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 (47998963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23999480 + 23999481.

It is an arithmetic number, because the mean of its divisors is an integer number (23999481).

Almost surely, 2^47998961 is an apocalyptic number.

It is an amenable number.

47998961 is a deficient number, since it is larger than the sum of its proper divisors (1).

47998961 is an equidigital number, since it uses as much as digits as its factorization.

47998961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 47998961 is about 6928.1282465035. The cubic root of 47998961 is about 363.4214963415.

The spelling of 47998961 in words is "forty-seven million, nine hundred ninety-eight thousand, nine hundred sixty-one".