929139 has 4 divisors (see below), whose sum is σ = 1238856. Its totient is φ = 619424.

The previous prime is 929129. The next prime is 929141. The reversal of 929139 is 931929.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931929 = 3 ⋅310643.

It is a cyclic number.

It is not a de Polignac number, because 929139 - 2⁷ = 929011 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 929139.

It is not an unprimeable number, because it can be changed into a prime (929129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154854 + ... + 154859.

It is an arithmetic number, because the mean of its divisors is an integer number (309714).

2⁹²⁹¹³⁹ is an apocalyptic number.

929139 is a deficient number, since it is larger than the sum of its proper divisors (309717).

929139 is a wasteful number, since it uses less digits than its factorization.

929139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309716.

The product of its digits is 4374, while the sum is 33.

The square root of 929139 is about 963.9185650251. The cubic root of 929139 is about 97.5798688100.

The spelling of 929139 in words is "nine hundred twenty-nine thousand, one hundred thirty-nine".