47803421 has 2 divisors, whose sum is σ = 47803422. Its totient is φ = 47803420.

The previous prime is 47803409. The next prime is 47803451. The reversal of 47803421 is 12430874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47803396 + 25 = 6914^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 47803421 - 2¹⁰ = 47802397 is a prime.

It is a Chen prime.

It is equal to p_2877023 and since 47803421 and 2877023 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47803451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23901710 + 23901711.

It is an arithmetic number, because the mean of its divisors is an integer number (23901711).

Almost surely, 2^47803421 is an apocalyptic number.

It is an amenable number.

47803421 is a deficient number, since it is larger than the sum of its proper divisors (1).

47803421 is an equidigital number, since it uses as much as digits as its factorization.

47803421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 47803421 is about 6914.0018079257. The cubic root of 47803421 is about 362.9273178758.

The spelling of 47803421 in words is "forty-seven million, eight hundred three thousand, four hundred twenty-one".