49998789 has 10 divisors (see below), whose sum is σ = 74689670. Its totient is φ = 33332472.

The previous prime is 49998779. The next prime is 49998791. The reversal of 49998789 is 98789994.

It can be written as a sum of positive squares in only one way, i.e., 41177889 + 8820900 = 6417^2 + 2970^2 .

It is not a de Polignac number, because 49998789 - 2⁷ = 49998661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49998749) 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 9 ways as a sum of consecutive naturals, for example, 308554 + ... + 308715.

It is an arithmetic number, because the mean of its divisors is an integer number (7468967).

Almost surely, 2^49998789 is an apocalyptic number.

It is an amenable number.

49998789 is a deficient number, since it is larger than the sum of its proper divisors (24690881).

49998789 is an equidigital number, since it uses as much as digits as its factorization.

49998789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617281 (or 617272 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 49998789 is about 7070.9821807158. The cubic root of 49998789 is about 368.4001755986.

The spelling of 49998789 in words is "forty-nine million, nine hundred ninety-eight thousand, seven hundred eighty-nine".