49729947 has 16 divisors (see below), whose sum is σ = 71101440. Its totient is φ = 30805632.

The previous prime is 49729937. The next prime is 49729949. The reversal of 49729947 is 74992794.

It is not a de Polignac number, because 49729947 - 2¹⁶ = 49664411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 49729947.

It is not an unprimeable number, because it can be changed into a prime (49729949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143 + ... + 10200.

It is an arithmetic number, because the mean of its divisors is an integer number (4443840).

Almost surely, 2^49729947 is an apocalyptic number.

49729947 is a deficient number, since it is larger than the sum of its proper divisors (21371493).

49729947 is a wasteful number, since it uses less digits than its factorization.

49729947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12442.

The product of its digits is 1143072, while the sum is 51.

The square root of 49729947 is about 7051.9463270788. The cubic root of 49729947 is about 367.7386963344.

The spelling of 49729947 in words is "forty-nine million, seven hundred twenty-nine thousand, nine hundred forty-seven".