1992089 has 8 divisors (see below), whose sum is σ = 2196768. Its totient is φ = 1791360.

The previous prime is 1992079. The next prime is 1992101. The reversal of 1992089 is 9802991.

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

It is a cyclic number.

It is not a de Polignac number, because 1992089 - 2⁴ = 1992073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992049) 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, 134 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (274596).

2^1992089 is an apocalyptic number.

It is an amenable number.

1992089 is a deficient number, since it is larger than the sum of its proper divisors (204679).

1992089 is a wasteful number, since it uses less digits than its factorization.

1992089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1992089 is about 1411.4138301717. The cubic root of 1992089 is about 125.8257648865.

The spelling of 1992089 in words is "one million, nine hundred ninety-two thousand, eighty-nine".