998839950 has 48 divisors (see below), whose sum is σ = 2537556336. Its totient is φ = 259859200.

The previous prime is 998839949. The next prime is 998839951. The reversal of 998839950 is 59938899.

998839950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (998839949) and next prime (998839951).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998839951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75057 + ... + 87356.

It is an arithmetic number, because the mean of its divisors is an integer number (52865757).

Almost surely, 2^998839950 is an apocalyptic number.

998839950 is an abundant number, since it is smaller than the sum of its proper divisors (1538716386).

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

998839950 is a wasteful number, since it uses less digits than its factorization.

998839950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162469 (or 162464 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 60.

The square root of 998839950 is about 31604.4292781882. The cubic root of 998839950 is about 999.6131670462.

The spelling of 998839950 in words is "nine hundred ninety-eight million, eight hundred thirty-nine thousand, nine hundred fifty".