49477947 has 4 divisors (see below), whose sum is σ = 65970600. Its totient is φ = 32985296.

The previous prime is 49477933. The next prime is 49477949. The reversal of 49477947 is 74977494.

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 49477947 - 2⁷ = 49477819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49477947.

It is not an unprimeable number, because it can be changed into a prime (49477949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8246322 + ... + 8246327.

It is an arithmetic number, because the mean of its divisors is an integer number (16492650).

Almost surely, 2^49477947 is an apocalyptic number.

49477947 is a deficient number, since it is larger than the sum of its proper divisors (16492653).

49477947 is a wasteful number, since it uses less digits than its factorization.

49477947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16492652.

The product of its digits is 1778112, while the sum is 51.

The square root of 49477947 is about 7034.0562266732. The cubic root of 49477947 is about 367.1164882517.

The spelling of 49477947 in words is "forty-nine million, four hundred seventy-seven thousand, nine hundred forty-seven".