1986449 has 8 divisors (see below), whose sum is σ = 2069760. Its totient is φ = 1904400.

The previous prime is 1986443. The next prime is 1986461. The reversal of 1986449 is 9446891.

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 1986449 - 2¹⁶ = 1920913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1986443) 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, 4079 + ... + 4539.

It is an arithmetic number, because the mean of its divisors is an integer number (258720).

2^1986449 is an apocalyptic number.

It is an amenable number.

1986449 is a deficient number, since it is larger than the sum of its proper divisors (83311).

1986449 is a wasteful number, since it uses less digits than its factorization.

1986449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its digits is 62208, while the sum is 41.

The square root of 1986449 is about 1409.4144174089. The cubic root of 1986449 is about 125.7069067270.

It can be divided in two parts, 19 and 86449, that added together give a palindrome (86468).

The spelling of 1986449 in words is "one million, nine hundred eighty-six thousand, four hundred forty-nine".