1996499999 has 8 divisors (see below), whose sum is σ = 2150468880. Its totient is φ = 1842587136.

The previous prime is 1996499987. The next prime is 1996500017. The reversal of 1996499999 is 9999946991.

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

It is a de Polignac number, because none of the positive numbers 2^k-1996499999 is a prime.

It is a Duffinian number.

1996499999 is a modest number, since divided by 99999 gives 19964 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996492999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87104 + ... + 107610.

It is an arithmetic number, because the mean of its divisors is an integer number (268808610).

Almost surely, 2^1996499999 is an apocalyptic number.

1996499999 is a deficient number, since it is larger than the sum of its proper divisors (153968881).

1996499999 is a wasteful number, since it uses less digits than its factorization.

1996499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28009.

The product of its digits is 114791256, while the sum is 74.

The square root of 1996499999 is about 44682.2112143076. The cubic root of 1996499999 is about 1259.1856665984.

The spelling of 1996499999 in words is "one billion, nine hundred ninety-six million, four hundred ninety-nine thousand, nine hundred ninety-nine".