47979641 has 2 divisors, whose sum is σ = 47979642. Its totient is φ = 47979640.

The previous prime is 47979551. The next prime is 47979643. The reversal of 47979641 is 14697974.

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., 34810000 + 13169641 = 5900^2 + 3629^2 .

It is a cyclic number.

It is not a de Polignac number, because 47979641 - 2¹⁸ = 47717497 is a prime.

Together with 47979643, 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 (47979643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23989820 + 23989821.

It is an arithmetic number, because the mean of its divisors is an integer number (23989821).

Almost surely, 2^47979641 is an apocalyptic number.

It is an amenable number.

47979641 is a deficient number, since it is larger than the sum of its proper divisors (1).

47979641 is an equidigital number, since it uses as much as digits as its factorization.

47979641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 47979641 is about 6926.7337901785. The cubic root of 47979641 is about 363.3727296917.

The spelling of 47979641 in words is "forty-seven million, nine hundred seventy-nine thousand, six hundred forty-one".