8139830 has 16 divisors (see below), whose sum is σ = 14871600. Its totient is φ = 3207072.

The previous prime is 8139829. The next prime is 8139869. The reversal of 8139830 is 389318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5405 + ... + 6744.

It is an arithmetic number, because the mean of its divisors is an integer number (929475).

Almost surely, 2^8139830 is an apocalyptic number.

8139830 is a deficient number, since it is larger than the sum of its proper divisors (6731770).

8139830 is a wasteful number, since it uses less digits than its factorization.

8139830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12223.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 8139830 is about 2853.0387308973. The cubic root of 8139830 is about 201.1585261281.

The spelling of 8139830 in words is "eight million, one hundred thirty-nine thousand, eight hundred thirty".