47356421 has 8 divisors (see below), whose sum is σ = 54339264. Its totient is φ = 40428000.

The previous prime is 47356403. The next prime is 47356423. The reversal of 47356421 is 12465374.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47356421 - 2¹⁸ = 47094277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47356423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11720 + ... + 15233.

It is an arithmetic number, because the mean of its divisors is an integer number (6792408).

Almost surely, 2^47356421 is an apocalyptic number.

It is an amenable number.

47356421 is a deficient number, since it is larger than the sum of its proper divisors (6982843).

47356421 is a wasteful number, since it uses less digits than its factorization.

47356421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27211.

The product of its digits is 20160, while the sum is 32.

The square root of 47356421 is about 6881.6001772844. The cubic root of 47356421 is about 361.7925538346.

The spelling of 47356421 in words is "forty-seven million, three hundred fifty-six thousand, four hundred twenty-one".