996641929 has 4 divisors (see below), whose sum is σ = 1002148420. Its totient is φ = 991135440.

The previous prime is 996641897. The next prime is 996641939. The reversal of 996641929 is 929146699.

996641929 = T₂₅₇₇₅ + T₂₅₇₇₆ + T₂₅₇₇₇.

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 360240400 + 636401529 = 18980^2 + 25227^2 .

It is a cyclic number.

It is not a de Polignac number, because 996641929 - 2⁵ = 996641897 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 996641929.

It is not an unprimeable number, because it can be changed into a prime (996641939) 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, 2752974 + ... + 2753335.

It is an arithmetic number, because the mean of its divisors is an integer number (250537105).

Almost surely, 2^996641929 is an apocalyptic number.

996641929 is the 25777-th centered triangular number.

It is an amenable number.

996641929 is a deficient number, since it is larger than the sum of its proper divisors (5506491).

996641929 is a wasteful number, since it uses less digits than its factorization.

996641929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506490.

The product of its digits is 1889568, while the sum is 55.

The square root of 996641929 is about 31569.6361873240. The cubic root of 996641929 is about 998.8793876971.

The spelling of 996641929 in words is "nine hundred ninety-six million, six hundred forty-one thousand, nine hundred twenty-nine".