49840729 has 2 divisors, whose sum is σ = 49840730. Its totient is φ = 49840728.

The previous prime is 49840717. The next prime is 49840751. The reversal of 49840729 is 92704894.

49840729 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 4210704 = 6755^2 + 2052^2 .

It is a cyclic number.

It is not a de Polignac number, because 49840729 - 2¹¹ = 49838681 is a prime.

It is not a weakly prime, because it can be changed into another prime (49840709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24920364 + 24920365.

It is an arithmetic number, because the mean of its divisors is an integer number (24920365).

Almost surely, 2^49840729 is an apocalyptic number.

It is an amenable number.

49840729 is a deficient number, since it is larger than the sum of its proper divisors (1).

49840729 is an equidigital number, since it uses as much as digits as its factorization.

49840729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 49840729 is about 7059.7966684601. The cubic root of 49840729 is about 368.0115608569.

It can be divided in two parts, 498407 and 29, that added together give a square (498436 = 706²).

The spelling of 49840729 in words is "forty-nine million, eight hundred forty thousand, seven hundred twenty-nine".