47991044 has 12 divisors (see below), whose sum is σ = 84032844. Its totient is φ = 23981664.

The previous prime is 47991037. The next prime is 47991061. The reversal of 47991044 is 44019974.

It can be written as a sum of positive squares in 2 ways, for example, as 30030400 + 17960644 = 5480^2 + 4238^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 47990989 and 47991007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11714 + ... + 15270.

It is an arithmetic number, because the mean of its divisors is an integer number (7002737).

Almost surely, 2^47991044 is an apocalyptic number.

It is an amenable number.

47991044 is a deficient number, since it is larger than the sum of its proper divisors (36041800).

47991044 is a wasteful number, since it uses less digits than its factorization.

47991044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934 (or 6932 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 47991044 is about 6927.5568564971. The cubic root of 47991044 is about 363.4015141994.

The spelling of 47991044 in words is "forty-seven million, nine hundred ninety-one thousand, forty-four".