47698421 has 4 divisors (see below), whose sum is σ = 47771244. Its totient is φ = 47625600.

The previous prime is 47698411. The next prime is 47698451. The reversal of 47698421 is 12489674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40462321 + 7236100 = 6361^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 47698421 - 2²² = 43504117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47698411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35420 + ... + 36741.

It is an arithmetic number, because the mean of its divisors is an integer number (11942811).

Almost surely, 2^47698421 is an apocalyptic number.

It is an amenable number.

47698421 is a deficient number, since it is larger than the sum of its proper divisors (72823).

47698421 is an equidigital number, since it uses as much as digits as its factorization.

47698421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72822.

The product of its digits is 96768, while the sum is 41.

The square root of 47698421 is about 6906.4043466916. The cubic root of 47698421 is about 362.6614003427.

The spelling of 47698421 in words is "forty-seven million, six hundred ninety-eight thousand, four hundred twenty-one".