3998029 has 4 divisors (see below), whose sum is σ = 4569184. Its totient is φ = 3426876.

The previous prime is 3998003. The next prime is 3998041. The reversal of 3998029 is 9208993.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9208993 = 23 ⋅400391.

It is a cyclic number.

It is not a de Polignac number, because 3998029 - 2⁵ = 3997997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3997982 and 3998000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998069) 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, 285567 + ... + 285580.

It is an arithmetic number, because the mean of its divisors is an integer number (1142296).

Almost surely, 2^3998029 is an apocalyptic number.

It is an amenable number.

3998029 is a deficient number, since it is larger than the sum of its proper divisors (571155).

3998029 is an equidigital number, since it uses as much as digits as its factorization.

3998029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571154.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 3998029 is about 1999.5071892844. The cubic root of 3998029 is about 158.7140278509.

The spelling of 3998029 in words is "three million, nine hundred ninety-eight thousand, twenty-nine".