996409490 has 8 divisors (see below), whose sum is σ = 1793537100. Its totient is φ = 398563792.

The previous prime is 996409489. The next prime is 996409493. The reversal of 996409490 is 94904699.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 898260841 + 98148649 = 29971^2 + 9907^2 .

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

It is not an unprimeable number, because it can be changed into a prime (996409493) 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, 49820465 + ... + 49820484.

Almost surely, 2^996409490 is an apocalyptic number.

996409490 is a deficient number, since it is larger than the sum of its proper divisors (797127610).

996409490 is a wasteful number, since it uses less digits than its factorization.

996409490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99640956.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 996409490 is about 31565.9546030213. The cubic root of 996409490 is about 998.8017280512.

The spelling of 996409490 in words is "nine hundred ninety-six million, four hundred nine thousand, four hundred ninety".