1449187689 has 8 divisors (see below), whose sum is σ = 1961090080. Its totient is φ = 951705216.

The previous prime is 1449187687. The next prime is 1449187709. The reversal of 1449187689 is 9867819441.

It is a happy number.

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

It is not a de Polignac number, because 1449187689 - 2¹ = 1449187687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1449187687) 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, 3604744 + ... + 3605145.

It is an arithmetic number, because the mean of its divisors is an integer number (245136260).

Almost surely, 2^1449187689 is an apocalyptic number.

It is an amenable number.

1449187689 is a deficient number, since it is larger than the sum of its proper divisors (511902391).

1449187689 is an equidigital number, since it uses as much as digits as its factorization.

1449187689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209959.

The product of its digits is 3483648, while the sum is 57.

The square root of 1449187689 is about 38068.1978690875. The cubic root of 1449187689 is about 1131.6397966710.

The spelling of 1449187689 in words is "one billion, four hundred forty-nine million, one hundred eighty-seven thousand, six hundred eighty-nine".