3899225 has 18 divisors (see below), whose sum is σ = 5318670. Its totient is φ = 2833600.

The previous prime is 3899219. The next prime is 3899227. The reversal of 3899225 is 5229983.

It can be written as a sum of positive squares in 3 ways, for example, as 644809 + 3254416 = 803^2 + 1804^2 .

It is not a de Polignac number, because 3899225 - 2⁴ = 3899209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3899227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2381 + ... + 3669.

Almost surely, 2^3899225 is an apocalyptic number.

It is an amenable number.

3899225 is a deficient number, since it is larger than the sum of its proper divisors (1419445).

3899225 is a wasteful number, since it uses less digits than its factorization.

3899225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1305 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 3899225 is about 1974.6455378118. The cubic root of 3899225 is about 157.3956645005.

The spelling of 3899225 in words is "three million, eight hundred ninety-nine thousand, two hundred twenty-five".