3990147 has 16 divisors (see below), whose sum is σ = 6112512. Its totient is φ = 2268000.

The previous prime is 3990127. The next prime is 3990157. The reversal of 3990147 is 7410993.

3990147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3990147 - 2⁶ = 3990083 is a prime.

3990147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3990127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4893 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (382032).

Almost surely, 2^3990147 is an apocalyptic number.

3990147 is a deficient number, since it is larger than the sum of its proper divisors (2122365).

3990147 is a wasteful number, since it uses less digits than its factorization.

3990147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 3990147 is about 1997.5352312287. The cubic root of 3990147 is about 158.6096591764.

The spelling of 3990147 in words is "three million, nine hundred ninety thousand, one hundred forty-seven".