47213149 has 4 divisors (see below), whose sum is σ = 47437120. Its totient is φ = 46989180.

The previous prime is 47213143. The next prime is 47213171. The reversal of 47213149 is 94131274.

47213149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47213149 - 2⁹ = 47212637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47213149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47213143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111669 + ... + 112090.

It is an arithmetic number, because the mean of its divisors is an integer number (11859280).

Almost surely, 2^47213149 is an apocalyptic number.

It is an amenable number.

47213149 is a deficient number, since it is larger than the sum of its proper divisors (223971).

47213149 is a wasteful number, since it uses less digits than its factorization.

47213149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223970.

The product of its digits is 6048, while the sum is 31.

The square root of 47213149 is about 6871.1825037616. The cubic root of 47213149 is about 361.4273298355.

The spelling of 47213149 in words is "forty-seven million, two hundred thirteen thousand, one hundred forty-nine".