49819729 has 4 divisors (see below), whose sum is σ = 52441840. Its totient is φ = 47197620.

The previous prime is 49819727. The next prime is 49819747. The reversal of 49819729 is 92791894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49819729 - 2¹ = 49819727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49819727) 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 in 3 ways as a sum of consecutive naturals, for example, 1311027 + ... + 1311064.

It is an arithmetic number, because the mean of its divisors is an integer number (13110460).

Almost surely, 2^49819729 is an apocalyptic number.

It is an amenable number.

49819729 is a deficient number, since it is larger than the sum of its proper divisors (2622111).

49819729 is a wasteful number, since it uses less digits than its factorization.

49819729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622110.

The product of its digits is 326592, while the sum is 49.

The square root of 49819729 is about 7058.3092168026. The cubic root of 49819729 is about 367.9598673350.

The spelling of 49819729 in words is "forty-nine million, eight hundred nineteen thousand, seven hundred twenty-nine".