9900751 has 4 divisors (see below), whose sum is σ = 11315152. Its totient is φ = 8486352.

The previous prime is 9900733. The next prime is 9900757. The reversal of 9900751 is 1570099.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9900751 - 2⁷ = 9900623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707190 + ... + 707203.

It is an arithmetic number, because the mean of its divisors is an integer number (2828788).

Almost surely, 2^9900751 is an apocalyptic number.

9900751 is a deficient number, since it is larger than the sum of its proper divisors (1414401).

9900751 is a wasteful number, since it uses less digits than its factorization.

9900751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414400.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 9900751 is about 3146.5458839814. The cubic root of 9900751 is about 214.7283462902.

The spelling of 9900751 in words is "nine million, nine hundred thousand, seven hundred fifty-one".