3990049 has 8 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 3410880.

The previous prime is 3990047. The next prime is 3990061. The reversal of 3990049 is 9400993.

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

It is a cyclic number.

It is not a de Polignac number, because 3990049 - 2¹ = 3990047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3989996 and 3990023.

It is not an unprimeable number, because it can be changed into a prime (3990047) 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, 4089 + ... + 4969.

It is an arithmetic number, because the mean of its divisors is an integer number (571536).

Almost surely, 2^3990049 is an apocalyptic number.

It is an amenable number.

3990049 is a deficient number, since it is larger than the sum of its proper divisors (582239).

3990049 is an equidigital number, since it uses as much as digits as its factorization.

3990049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3990049 is about 1997.5107008474. The cubic root of 3990049 is about 158.6083606550.

The spelling of 3990049 in words is "three million, nine hundred ninety thousand, forty-nine".