1924389 has 6 divisors (see below), whose sum is σ = 2779686. Its totient is φ = 1282920.

The previous prime is 1924343. The next prime is 1924393. The reversal of 1924389 is 9834291.

It can be written as a sum of positive squares in only one way, i.e., 1361889 + 562500 = 1167^2 + 750^2 .

It is not a de Polignac number, because 1924389 - 2⁷ = 1924261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1924289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106902 + ... + 106919.

It is an arithmetic number, because the mean of its divisors is an integer number (463281).

2^1924389 is an apocalyptic number.

It is an amenable number.

1924389 is a deficient number, since it is larger than the sum of its proper divisors (855297).

1924389 is a wasteful number, since it uses less digits than its factorization.

1924389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213827 (or 213824 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1924389 is about 1387.2234859604. The cubic root of 1924389 is about 124.3839340232.

The spelling of 1924389 in words is "one million, nine hundred twenty-four thousand, three hundred eighty-nine".