47747222 has 4 divisors (see below), whose sum is σ = 71620836. Its totient is φ = 23873610.

The previous prime is 47747221. The next prime is 47747233. The reversal of 47747222 is 22274774.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47747221) 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 as a sum of consecutive naturals, namely, 11936804 + ... + 11936807.

It is an arithmetic number, because the mean of its divisors is an integer number (17905209).

Almost surely, 2^47747222 is an apocalyptic number.

47747222 is a deficient number, since it is larger than the sum of its proper divisors (23873614).

47747222 is a wasteful number, since it uses less digits than its factorization.

47747222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23873613.

The product of its digits is 43904, while the sum is 35.

The square root of 47747222 is about 6909.9364685936. The cubic root of 47747222 is about 362.7850397020.

The spelling of 47747222 in words is "forty-seven million, seven hundred forty-seven thousand, two hundred twenty-two".