39889449 has 16 divisors (see below), whose sum is σ = 59194240. Its totient is φ = 26548560.

The previous prime is 39889439. The next prime is 39889457. The reversal of 39889449 is 94498893.

It is not a de Polignac number, because 39889449 - 2⁸ = 39889193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39889395 and 39889404.

It is not an unprimeable number, because it can be changed into a prime (39889439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26844 + ... + 28290.

It is an arithmetic number, because the mean of its divisors is an integer number (3699640).

Almost surely, 2^39889449 is an apocalyptic number.

It is an amenable number.

39889449 is a deficient number, since it is larger than the sum of its proper divisors (19304791).

39889449 is a wasteful number, since it uses less digits than its factorization.

With its successor (39889450) it forms an eRAP, since the sums of their prime factors are consecutive (2477 and 2478).

39889449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 2471 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 39889449 is about 6315.8094493105. The cubic root of 39889449 is about 341.6798327136.

The spelling of 39889449 in words is "thirty-nine million, eight hundred eighty-nine thousand, four hundred forty-nine".