47224391 has 2 divisors, whose sum is σ = 47224392. Its totient is φ = 47224390.

The previous prime is 47224381. The next prime is 47224409. The reversal of 47224391 is 19342274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47224391 - 2⁶ = 47224327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47224361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23612195 + 23612196.

It is an arithmetic number, because the mean of its divisors is an integer number (23612196).

Almost surely, 2^47224391 is an apocalyptic number.

47224391 is a deficient number, since it is larger than the sum of its proper divisors (1).

47224391 is an equidigital number, since it uses as much as digits as its factorization.

47224391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 47224391 is about 6872.0005093131. Note that the first 3 decimals coincide. The cubic root of 47224391 is about 361.4560142428.

The spelling of 47224391 in words is "forty-seven million, two hundred twenty-four thousand, three hundred ninety-one".