3899145 has 8 divisors (see below), whose sum is σ = 6238656. Its totient is φ = 2079536.

The previous prime is 3899143. The next prime is 3899153. The reversal of 3899145 is 5419983.

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 3899145 - 2¹ = 3899143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3899143) 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, 129957 + ... + 129986.

It is an arithmetic number, because the mean of its divisors is an integer number (779832).

Almost surely, 2^3899145 is an apocalyptic number.

It is an amenable number.

3899145 is a deficient number, since it is larger than the sum of its proper divisors (2339511).

3899145 is a wasteful number, since it uses less digits than its factorization.

3899145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259951.

The product of its digits is 38880, while the sum is 39.

The square root of 3899145 is about 1974.6252809077. The cubic root of 3899145 is about 157.3945880696.

The spelling of 3899145 in words is "three million, eight hundred ninety-nine thousand, one hundred forty-five".