9123378409 has 8 divisors (see below), whose sum is σ = 9746894240. Its totient is φ = 8514196416.

The previous prime is 9123378391. The next prime is 9123378427. The reversal of 9123378409 is 9048733219.

It is an interprime number because it is at equal distance from previous prime (9123378391) and next prime (9123378427).

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 9123378409 - 2²⁷ = 8989160681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9123378449) 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, 3582144 + ... + 3584689.

It is an arithmetic number, because the mean of its divisors is an integer number (1218361780).

Almost surely, 2^9123378409 is an apocalyptic number.

It is an amenable number.

9123378409 is a deficient number, since it is larger than the sum of its proper divisors (623515831).

9123378409 is a wasteful number, since it uses less digits than its factorization.

9123378409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166919.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 9123378409 is about 95516.3777003714. The cubic root of 9123378409 is about 2089.5458067692.

The spelling of 9123378409 in words is "nine billion, one hundred twenty-three million, three hundred seventy-eight thousand, four hundred nine".