9940087 has 8 divisors (see below), whose sum is σ = 10809936. Its totient is φ = 9101952.

The previous prime is 9940067. The next prime is 9940093. The reversal of 9940087 is 7800499.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9940087 - 2⁷ = 9939959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940027) 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, 7273 + ... + 8530.

It is an arithmetic number, because the mean of its divisors is an integer number (1351242).

Almost surely, 2^9940087 is an apocalyptic number.

9940087 is a deficient number, since it is larger than the sum of its proper divisors (869849).

9940087 is a wasteful number, since it uses less digits than its factorization.

9940087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15857.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 9940087 is about 3152.7903514189. The cubic root of 9940087 is about 215.0123447031.

It can be divided in two parts, 99 and 40087, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 9940087 in words is "nine million, nine hundred forty thousand, eighty-seven".