3902449 has 4 divisors (see below), whose sum is σ = 3907440. Its totient is φ = 3897460.

The previous prime is 3902441. The next prime is 3902453. The reversal of 3902449 is 9442093.

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.

It is a cyclic number.

It is not a de Polignac number, because 3902449 - 2³ = 3902441 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3902449.

It is not an unprimeable number, because it can be changed into a prime (3902441) 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, 1039 + ... + 2980.

It is an arithmetic number, because the mean of its divisors is an integer number (976860).

Almost surely, 2^3902449 is an apocalyptic number.

It is an amenable number.

3902449 is a deficient number, since it is larger than the sum of its proper divisors (4991).

3902449 is an equidigital number, since it uses as much as digits as its factorization.

3902449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 3902449 is about 1975.4617181813. The cubic root of 3902449 is about 157.4390324202.

The spelling of 3902449 in words is "three million, nine hundred two thousand, four hundred forty-nine".