47229487 has 4 divisors (see below), whose sum is σ = 48858120. Its totient is φ = 45600856.

The previous prime is 47229473. The next prime is 47229491. The reversal of 47229487 is 78492274.

47229487 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.

It is a cyclic number.

It is not a de Polignac number, because 47229487 - 2⁷ = 47229359 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 (47221487) 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, 814273 + ... + 814330.

It is an arithmetic number, because the mean of its divisors is an integer number (12214530).

Almost surely, 2^47229487 is an apocalyptic number.

47229487 is a deficient number, since it is larger than the sum of its proper divisors (1628633).

47229487 is a wasteful number, since it uses less digits than its factorization.

47229487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628632.

The product of its digits is 225792, while the sum is 43.

The square root of 47229487 is about 6872.3712792602. The cubic root of 47229487 is about 361.4690153888.

The spelling of 47229487 in words is "forty-seven million, two hundred twenty-nine thousand, four hundred eighty-seven".