49642729 has 4 divisors (see below), whose sum is σ = 49699584. Its totient is φ = 49585876.

The previous prime is 49642727. The next prime is 49642741. The reversal of 49642729 is 92724694.

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 49642729 - 2¹ = 49642727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49642727) 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, 27097 + ... + 28870.

It is an arithmetic number, because the mean of its divisors is an integer number (12424896).

Almost surely, 2^49642729 is an apocalyptic number.

It is an amenable number.

49642729 is a deficient number, since it is larger than the sum of its proper divisors (56855).

49642729 is an equidigital number, since it uses as much as digits as its factorization.

49642729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56854.

The product of its digits is 217728, while the sum is 43.

The square root of 49642729 is about 7045.7596467663. The cubic root of 49642729 is about 367.5235864973.

The spelling of 49642729 in words is "forty-nine million, six hundred forty-two thousand, seven hundred twenty-nine".