919139 has 8 divisors (see below), whose sum is σ = 1048320. Its totient is φ = 798336.

The previous prime is 919129. The next prime is 919147. The reversal of 919139 is 931919.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-919139 is a prime.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 919139.

It is not an unprimeable number, because it can be changed into a prime (919109) 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, 1859 + ... + 2300.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2⁹¹⁹¹³⁹ is an apocalyptic number.

919139 is a deficient number, since it is larger than the sum of its proper divisors (129181).

919139 is a wasteful number, since it uses less digits than its factorization.

919139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189.

The product of its digits is 2187, while the sum is 32.

The square root of 919139 is about 958.7173723262. The cubic root of 919139 is about 97.2285326093.

The spelling of 919139 in words is "nine hundred nineteen thousand, one hundred thirty-nine".