9951487 has 8 divisors (see below), whose sum is σ = 12248096. Its totient is φ = 7873632.

The previous prime is 9951481. The next prime is 9951499. The reversal of 9951487 is 7841599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9951487 - 2¹¹ = 9949439 is a prime.

It is a super-2 number, since 2×9951487² = 198064187022338, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9951481) 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 7 ways as a sum of consecutive naturals, for example, 54588 + ... + 54769.

It is an arithmetic number, because the mean of its divisors is an integer number (1531012).

Almost surely, 2^9951487 is an apocalyptic number.

9951487 is a deficient number, since it is larger than the sum of its proper divisors (2296609).

9951487 is a wasteful number, since it uses less digits than its factorization.

9951487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109377.

The product of its digits is 90720, while the sum is 43.

The square root of 9951487 is about 3154.5977556576. The cubic root of 9951487 is about 215.0945104588.

The spelling of 9951487 in words is "nine million, nine hundred fifty-one thousand, four hundred eighty-seven".