3992017129 has 8 divisors (see below), whose sum is σ = 4228384680. Its totient is φ = 3755821056.

The previous prime is 3992017123. The next prime is 3992017147. The reversal of 3992017129 is 9217102993.

It can be written as a sum of positive squares in 4 ways, for example, as 1439443600 + 2552573529 = 37940^2 + 50523^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3992017129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3992017123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6717 + ... + 89605.

It is an arithmetic number, because the mean of its divisors is an integer number (528548085).

Almost surely, 2^3992017129 is an apocalyptic number.

It is an amenable number.

3992017129 is a deficient number, since it is larger than the sum of its proper divisors (236367551).

3992017129 is a wasteful number, since it uses less digits than its factorization.

3992017129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85739.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 3992017129 is about 63182.4115478351. The cubic root of 3992017129 is about 1586.3443472094.

The spelling of 3992017129 in words is "three billion, nine hundred ninety-two million, seventeen thousand, one hundred twenty-nine".