996409439 has 16 divisors (see below), whose sum is σ = 1024124640. Its totient is φ = 969200640.

The previous prime is 996409417. The next prime is 996409489. The reversal of 996409439 is 934904699.

It is a cyclic number.

It is not a de Polignac number, because 996409439 - 2¹⁶ = 996343903 is a prime.

It is a super-3 number, since 3×996409439³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996409489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2180099 + ... + 2180555.

It is an arithmetic number, because the mean of its divisors is an integer number (64007790).

Almost surely, 2^996409439 is an apocalyptic number.

996409439 is a deficient number, since it is larger than the sum of its proper divisors (27715201).

996409439 is a wasteful number, since it uses less digits than its factorization.

996409439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The square root of 996409439 is about 31565.9537951889. The cubic root of 996409439 is about 998.8017110104.

The spelling of 996409439 in words is "nine hundred ninety-six million, four hundred nine thousand, four hundred thirty-nine".