3889949 has 4 divisors (see below), whose sum is σ = 4445664. Its totient is φ = 3334236.

The previous prime is 3889939. The next prime is 3889969. The reversal of 3889949 is 9499883.

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 3889949 - 2⁴ = 3889933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3889897 and 3889906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889939) 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, 277847 + ... + 277860.

It is an arithmetic number, because the mean of its divisors is an integer number (1111416).

Almost surely, 2^3889949 is an apocalyptic number.

It is an amenable number.

3889949 is a deficient number, since it is larger than the sum of its proper divisors (555715).

3889949 is an equidigital number, since it uses as much as digits as its factorization.

3889949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555714.

The product of its digits is 559872, while the sum is 50.

The square root of 3889949 is about 1972.2953632760. The cubic root of 3889949 is about 157.2707540832.

The spelling of 3889949 in words is "three million, eight hundred eighty-nine thousand, nine hundred forty-nine".