49672729 has 2 divisors, whose sum is σ = 49672730. Its totient is φ = 49672728.

The previous prime is 49672723. The next prime is 49672739. The reversal of 49672729 is 92727694.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 6901129 = 6540^2 + 2627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49672729 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (49672723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24836364 + 24836365.

It is an arithmetic number, because the mean of its divisors is an integer number (24836365).

Almost surely, 2^49672729 is an apocalyptic number.

It is an amenable number.

49672729 is a deficient number, since it is larger than the sum of its proper divisors (1).

49672729 is an equidigital number, since it uses as much as digits as its factorization.

49672729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 49672729 is about 7047.8882652891. Note that the first 3 decimals coincide. The cubic root of 49672729 is about 367.5976053083.

The spelling of 49672729 in words is "forty-nine million, six hundred seventy-two thousand, seven hundred twenty-nine".