8438949 has 6 divisors (see below), whose sum is σ = 12189606. Its totient is φ = 5625960.

The previous prime is 8438929. The next prime is 8438951. The reversal of 8438949 is 9498348.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 986049 = 2730^2 + 993^2 .

It is not a de Polignac number, because 8438949 - 2⁵ = 8438917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8438909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468822 + ... + 468839.

It is an arithmetic number, because the mean of its divisors is an integer number (2031601).

Almost surely, 2^8438949 is an apocalyptic number.

It is an amenable number.

8438949 is a deficient number, since it is larger than the sum of its proper divisors (3750657).

8438949 is a wasteful number, since it uses less digits than its factorization.

8438949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937667 (or 937664 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 8438949 is about 2904.9869190755. The cubic root of 8438949 is about 203.5929744772.

The spelling of 8438949 in words is "eight million, four hundred thirty-eight thousand, nine hundred forty-nine".