1008139 has 8 divisors (see below), whose sum is σ = 1129968. Its totient is φ = 891360.

The previous prime is 1008131. The next prime is 1008157. The reversal of 1008139 is 9318001.

1008139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1008139 - 2³ = 1008131 is a prime.

It is a Duffinian number.

1008139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1008131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (141246).

2^1008139 is an apocalyptic number.

1008139 is a deficient number, since it is larger than the sum of its proper divisors (121829).

1008139 is a wasteful number, since it uses less digits than its factorization.

1008139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1008139 is about 1004.0612531116. The cubic root of 1008139 is about 100.2705672733.

The spelling of 1008139 in words is "one million, eight thousand, one hundred thirty-nine".