999139102 has 16 divisors (see below), whose sum is σ = 1614584160. Its totient is φ = 460972512.

The previous prime is 999139087. The next prime is 999139139. The reversal of 999139102 is 201931999.

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, 91528 + ... + 101860.

It is an arithmetic number, because the mean of its divisors is an integer number (100911510).

Almost surely, 2^999139102 is an apocalyptic number.

999139102 is a deficient number, since it is larger than the sum of its proper divisors (615445058).

999139102 is a wasteful number, since it uses less digits than its factorization.

999139102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14067.

The product of its (nonzero) digits is 39366, while the sum is 43.

The square root of 999139102 is about 31609.1616782223. The cubic root of 999139102 is about 999.7129516111.

The spelling of 999139102 in words is "nine hundred ninety-nine million, one hundred thirty-nine thousand, one hundred two".