9950697021 has 16 divisors (see below), whose sum is σ = 13319078400. Its totient is φ = 6608098608.

The previous prime is 9950697017. The next prime is 9950697049. The reversal of 9950697021 is 1207960599.

9950697021 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9950697021 - 2² = 9950697017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9950697121) 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 15 ways as a sum of consecutive naturals, for example, 1092930 + ... + 1101996.

It is an arithmetic number, because the mean of its divisors is an integer number (832442400).

Almost surely, 2^9950697021 is an apocalyptic number.

It is an amenable number.

9950697021 is a deficient number, since it is larger than the sum of its proper divisors (3368381379).

9950697021 is a wasteful number, since it uses less digits than its factorization.

9950697021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10448.

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 9950697021 is about 99753.1805056861. The cubic root of 9950697021 is about 2150.8881869154. Note that the first 3 decimals are identical.

The spelling of 9950697021 in words is "nine billion, nine hundred fifty million, six hundred ninety-seven thousand, twenty-one".