996966401 has 4 divisors (see below), whose sum is σ = 1006283952. Its totient is φ = 987648852.

The previous prime is 996966391. The next prime is 996966407. The reversal of 996966401 is 104669699.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996966401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 996966401.

It is not an unprimeable number, because it can be changed into a prime (996966407) 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, 4658615 + ... + 4658828.

It is an arithmetic number, because the mean of its divisors is an integer number (251570988).

It is a Proth number, since it is equal to 30425 ⋅ 2¹⁵ + 1 and 30425 < 2¹⁵.

Almost surely, 2^996966401 is an apocalyptic number.

It is an amenable number.

996966401 is a deficient number, since it is larger than the sum of its proper divisors (9317551).

996966401 is a wasteful number, since it uses less digits than its factorization.

996966401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9317550.

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

The square root of 996966401 is about 31574.7747577081. The cubic root of 996966401 is about 998.9877760818.

The spelling of 996966401 in words is "nine hundred ninety-six million, nine hundred sixty-six thousand, four hundred one".