1992449 has 4 divisors (see below), whose sum is σ = 2003760. Its totient is φ = 1981140.

The previous prime is 1992439. The next prime is 1992469. The reversal of 1992449 is 9442991.

It is a happy number.

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: 9442991 = 457 ⋅20663.

It is a cyclic number.

It is not a de Polignac number, because 1992449 - 2⁴ = 1992433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992409) 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, 5387 + ... + 5744.

It is an arithmetic number, because the mean of its divisors is an integer number (500940).

2^1992449 is an apocalyptic number.

It is an amenable number.

1992449 is a deficient number, since it is larger than the sum of its proper divisors (11311).

1992449 is a wasteful number, since it uses less digits than its factorization.

1992449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11310.

The product of its digits is 23328, while the sum is 38.

The square root of 1992449 is about 1411.5413561069. The cubic root of 1992449 is about 125.8333439566.

The spelling of 1992449 in words is "one million, nine hundred ninety-two thousand, four hundred forty-nine".