1930039 has 4 divisors (see below), whose sum is σ = 2031640. Its totient is φ = 1828440.

The previous prime is 1930021. The next prime is 1930043. The reversal of 1930039 is 9300391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9300391 = 1277 ⋅7283.

It is a cyclic number.

It is not a de Polignac number, because 1930039 - 2⁹ = 1929527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1929995 and 1930022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930079) 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, 50772 + ... + 50809.

It is an arithmetic number, because the mean of its divisors is an integer number (507910).

2^1930039 is an apocalyptic number.

1930039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1930039 is a deficient number, since it is larger than the sum of its proper divisors (101601).

1930039 is a wasteful number, since it uses less digits than its factorization.

1930039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101600.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 1930039 is about 1389.2584352812. The cubic root of 1930039 is about 124.5055453625.

The spelling of 1930039 in words is "one million, nine hundred thirty thousand, thirty-nine".