49999698 has 72 divisors (see below), whose sum is σ = 127724688. Its totient is φ = 14092848.

The previous prime is 49999693. The next prime is 49999699. The reversal of 49999698 is 89699994.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (49999693) 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 35 ways as a sum of consecutive naturals, for example, 72865 + ... + 73547.

It is an arithmetic number, because the mean of its divisors is an integer number (1773954).

Almost surely, 2^49999698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49999698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63862344).

49999698 is an abundant number, since it is smaller than the sum of its proper divisors (77724990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49999698 is a wasteful number, since it uses less digits than its factorization.

49999698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 778 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The square root of 49999698 is about 7071.0464572084. The cubic root of 49999698 is about 368.4024081442.

The spelling of 49999698 in words is "forty-nine million, nine hundred ninety-nine thousand, six hundred ninety-eight".