919844 has 6 divisors (see below), whose sum is σ = 1609734. Its totient is φ = 459920.

The previous prime is 919823. The next prime is 919859. The reversal of 919844 is 448919.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 40000 = 938^2 + 200^2 .

It is a super-2 number, since 2×919844² = 1692225968672, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 919844.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114977 + ... + 114984.

It is an arithmetic number, because the mean of its divisors is an integer number (268289).

2⁹¹⁹⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

919844 is a deficient number, since it is larger than the sum of its proper divisors (689890).

919844 is a wasteful number, since it uses less digits than its factorization.

919844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229965 (or 229963 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 919844 is about 959.0849805935. The cubic root of 919844 is about 97.2533850700.

The spelling of 919844 in words is "nine hundred nineteen thousand, eight hundred forty-four".