996088409 has 4 divisors (see below), whose sum is σ = 996432804. Its totient is φ = 995744016.

The previous prime is 996088391. The next prime is 996088417. The reversal of 996088409 is 904880699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 569872384 + 426216025 = 23872^2 + 20645^2 .

It is a cyclic number.

It is not a de Polignac number, because 996088409 - 2¹⁶ = 996022873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (996088469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167822 + ... + 173655.

It is an arithmetic number, because the mean of its divisors is an integer number (249108201).

Almost surely, 2^996088409 is an apocalyptic number.

It is an amenable number.

996088409 is a deficient number, since it is larger than the sum of its proper divisors (344395).

996088409 is a wasteful number, since it uses less digits than its factorization.

996088409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344394.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 996088409 is about 31560.8683182196. The cubic root of 996088409 is about 998.6944325688.

The spelling of 996088409 in words is "nine hundred ninety-six million, eighty-eight thousand, four hundred nine".