9951887 has 8 divisors (see below), whose sum is σ = 10947792. Its totient is φ = 9045960.

The previous prime is 9951883. The next prime is 9951911. The reversal of 9951887 is 7881599.

It is a happy number.

9951887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9951887 - 2² = 9951883 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 (9951883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2408 + ... + 5069.

It is an arithmetic number, because the mean of its divisors is an integer number (1368474).

Almost surely, 2^9951887 is an apocalyptic number.

9951887 is a deficient number, since it is larger than the sum of its proper divisors (995905).

9951887 is an equidigital number, since it uses as much as digits as its factorization.

9951887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510 (or 7488 counting only the distinct ones).

The product of its digits is 181440, while the sum is 47.

The square root of 9951887 is about 3154.6611545458. The cubic root of 9951887 is about 215.0973923280.

It can be divided in two parts, 995 and 1887, that added together give a palindrome (2882).

The spelling of 9951887 in words is "nine million, nine hundred fifty-one thousand, eight hundred eighty-seven".