1930489 has 4 divisors (see below), whose sum is σ = 2106000. Its totient is φ = 1754980.

The previous prime is 1930483. The next prime is 1930493. The reversal of 1930489 is 9840391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9840391 = 11 ⋅894581.

It is a cyclic number.

It is not a de Polignac number, because 1930489 - 2¹⁷ = 1799417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1930483) 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, 87739 + ... + 87760.

It is an arithmetic number, because the mean of its divisors is an integer number (526500).

2^1930489 is an apocalyptic number.

It is an amenable number.

1930489 is a deficient number, since it is larger than the sum of its proper divisors (175511).

1930489 is a wasteful number, since it uses less digits than its factorization.

1930489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175510.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1930489 is about 1389.4203827496. The cubic root of 1930489 is about 124.5152210118.

The spelling of 1930489 in words is "one million, nine hundred thirty thousand, four hundred eighty-nine".