9877642 has 8 divisors (see below), whose sum is σ = 14849856. Its totient is φ = 4927692.

The previous prime is 9877633. The next prime is 9877643. The reversal of 9877642 is 2467789.

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

It is a super-2 number, since 2×9877642² = 195135622960328, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9877643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4408 + ... + 6259.

It is an arithmetic number, because the mean of its divisors is an integer number (1856232).

Almost surely, 2^9877642 is an apocalyptic number.

9877642 is a deficient number, since it is larger than the sum of its proper divisors (4972214).

9877642 is a wasteful number, since it uses less digits than its factorization.

9877642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132.

The product of its digits is 169344, while the sum is 43.

The square root of 9877642 is about 3142.8716168498. The cubic root of 9877642 is about 214.5611528105.

The spelling of 9877642 in words is "nine million, eight hundred seventy-seven thousand, six hundred forty-two".