47796421 has 2 divisors, whose sum is σ = 47796422. Its totient is φ = 47796420.

The previous prime is 47796403. The next prime is 47796433. The reversal of 47796421 is 12469774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 6964321 = 6390^2 + 2639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47796421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47796481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23898210 + 23898211.

It is an arithmetic number, because the mean of its divisors is an integer number (23898211).

Almost surely, 2^47796421 is an apocalyptic number.

It is an amenable number.

47796421 is a deficient number, since it is larger than the sum of its proper divisors (1).

47796421 is an equidigital number, since it uses as much as digits as its factorization.

47796421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 47796421 is about 6913.4955702597. The cubic root of 47796421 is about 362.9096021616.

The spelling of 47796421 in words is "forty-seven million, seven hundred ninety-six thousand, four hundred twenty-one".