9967915 has 8 divisors (see below), whose sum is σ = 11986128. Its totient is φ = 7957920.

The previous prime is 9967891. The next prime is 9967987. The reversal of 9967915 is 5197699.

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

It is not a de Polignac number, because 9967915 - 2⁵ = 9967883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045 + ... + 4585.

It is an arithmetic number, because the mean of its divisors is an integer number (1498266).

Almost surely, 2^9967915 is an apocalyptic number.

9967915 is a deficient number, since it is larger than the sum of its proper divisors (2018213).

9967915 is a wasteful number, since it uses less digits than its factorization.

9967915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109.

The product of its digits is 153090, while the sum is 46.

The square root of 9967915 is about 3157.2005004434. The cubic root of 9967915 is about 215.2128053421.

It can be divided in two parts, 996 and 7915, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 9967915 in words is "nine million, nine hundred sixty-seven thousand, nine hundred fifteen".