1449091487 has 4 divisors (see below), whose sum is σ = 1525359480. Its totient is φ = 1372823496.

The previous prime is 1449091409. The next prime is 1449091493. The reversal of 1449091487 is 7841909441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1449091487 is a prime.

It is a super-2 number, since 2×1449091487² = 4199732275391742338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1449097487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38133968 + ... + 38134005.

It is an arithmetic number, because the mean of its divisors is an integer number (381339870).

Almost surely, 2^1449091487 is an apocalyptic number.

1449091487 is a deficient number, since it is larger than the sum of its proper divisors (76267993).

1449091487 is an equidigital number, since it uses as much as digits as its factorization.

1449091487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76267992.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1449091487 is about 38066.9342999932. The cubic root of 1449091487 is about 1131.6147554193.

The spelling of 1449091487 in words is "one billion, four hundred forty-nine million, ninety-one thousand, four hundred eighty-seven".