8439902 has 4 divisors (see below), whose sum is σ = 12659856. Its totient is φ = 4219950.

The previous prime is 8439901. The next prime is 8439947. The reversal of 8439902 is 2099348.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8439901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2109974 + ... + 2109977.

It is an arithmetic number, because the mean of its divisors is an integer number (3164964).

Almost surely, 2^8439902 is an apocalyptic number.

8439902 is a deficient number, since it is larger than the sum of its proper divisors (4219954).

8439902 is a wasteful number, since it uses less digits than its factorization.

8439902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219953.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 8439902 is about 2905.1509427223. The cubic root of 8439902 is about 203.6006380224.

The spelling of 8439902 in words is "eight million, four hundred thirty-nine thousand, nine hundred two".