9961950 has 24 divisors (see below), whose sum is σ = 24706008. Its totient is φ = 2656480.

The previous prime is 9961937. The next prime is 9961951. The reversal of 9961950 is 591699.

It is a junction number, because it is equal to n+sod(n) for n = 9961899 and 9961908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33057 + ... + 33356.

It is an arithmetic number, because the mean of its divisors is an integer number (1029417).

Almost surely, 2^9961950 is an apocalyptic number.

9961950 is an abundant number, since it is smaller than the sum of its proper divisors (14744058).

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

9961950 is a wasteful number, since it uses less digits than its factorization.

9961950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66428 (or 66423 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 9961950 is about 3156.2556930642. The cubic root of 9961950 is about 215.1698675582.

The spelling of 9961950 in words is "nine million, nine hundred sixty-one thousand, nine hundred fifty".