47376421 has 2 divisors, whose sum is σ = 47376422. Its totient is φ = 47376420.

The previous prime is 47376419. The next prime is 47376499. The reversal of 47376421 is 12467374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35224225 + 12152196 = 5935^2 + 3486^2 .

It is a cyclic number.

It is not a de Polignac number, because 47376421 - 2¹ = 47376419 is a prime.

Together with 47376419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47373421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23688210 + 23688211.

It is an arithmetic number, because the mean of its divisors is an integer number (23688211).

Almost surely, 2^47376421 is an apocalyptic number.

It is an amenable number.

47376421 is a deficient number, since it is larger than the sum of its proper divisors (1).

47376421 is an equidigital number, since it uses as much as digits as its factorization.

47376421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 47376421 is about 6883.0531742825. The cubic root of 47376421 is about 361.8434785211.

The spelling of 47376421 in words is "forty-seven million, three hundred seventy-six thousand, four hundred twenty-one".