996139 has 4 divisors (see below), whose sum is σ = 998424. Its totient is φ = 993856.

The previous prime is 996119. The next prime is 996143. The reversal of 996139 is 931699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931699 = 73 ⋅12763.

It is a cyclic number.

It is not a de Polignac number, because 996139 - 2⁷ = 996011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 996098 and 996107.

It is not an unprimeable number, because it can be changed into a prime (996109) 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, 262 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (249606).

2⁹⁹⁶¹³⁹ is an apocalyptic number.

996139 is a deficient number, since it is larger than the sum of its proper divisors (2285).

996139 is a wasteful number, since it uses less digits than its factorization.

996139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its digits is 13122, while the sum is 37.

The square root of 996139 is about 998.0676329788. The cubic root of 996139 is about 99.8711340069.

It can be divided in two parts, 9961 and 39, that added together give a 4-th power (10000 = 10⁴).

The spelling of 996139 in words is "nine hundred ninety-six thousand, one hundred thirty-nine".