49890322729 has 8 divisors (see below), whose sum is σ = 53743829832. Its totient is φ = 46039071360.

The previous prime is 49890322717. The next prime is 49890322777. The reversal of 49890322729 is 92722309894.

It can be written as a sum of positive squares in 4 ways, for example, as 27432303129 + 22458019600 = 165627^2 + 149860^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49890322729 - 2⁹ = 49890322217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49890322729.

It is not an unprimeable number, because it can be changed into a prime (49890322799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517852 + ... + 606589.

It is an arithmetic number, because the mean of its divisors is an integer number (6717978729).

Almost surely, 2^49890322729 is an apocalyptic number.

It is an amenable number.

49890322729 is a deficient number, since it is larger than the sum of its proper divisors (3853507103).

49890322729 is a wasteful number, since it uses less digits than its factorization.

49890322729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127867.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 49890322729 in words is "forty-nine billion, eight hundred ninety million, three hundred twenty-two thousand, seven hundred twenty-nine".