9998950 has 24 divisors (see below), whose sum is σ = 20029968. Its totient is φ = 3691680.

The previous prime is 9998929. The next prime is 9998969. The reversal of 9998950 is 598999.

It is a super-2 number, since 2×9998950² = 199958002205000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9998894 and 9998903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7042 + ... + 8341.

It is an arithmetic number, because the mean of its divisors is an integer number (834582).

Almost surely, 2^9998950 is an apocalyptic number.

9998950 is an abundant number, since it is smaller than the sum of its proper divisors (10031018).

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

9998950 is a wasteful number, since it uses less digits than its factorization.

9998950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15408 (or 15403 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 49.

The square root of 9998950 is about 3162.1116362330. Note that the first 3 decimals coincide. The cubic root of 9998950 is about 215.4359282178.

Adding to 9998950 its sum of digits (49), we get a palindrome (9998999).

The spelling of 9998950 in words is "nine million, nine hundred ninety-eight thousand, nine hundred fifty".