1438296489 has 24 divisors (see below), whose sum is σ = 2379529152. Its totient is φ = 820084320.

The previous prime is 1438296469. The next prime is 1438296539. The reversal of 1438296489 is 9846928341.

It is not a de Polignac number, because 1438296489 - 2⁷ = 1438296361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438296469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4282 + ... + 53804.

It is an arithmetic number, because the mean of its divisors is an integer number (99147048).

Almost surely, 2^1438296489 is an apocalyptic number.

It is an amenable number.

1438296489 is a deficient number, since it is larger than the sum of its proper divisors (941232663).

1438296489 is a wasteful number, since it uses less digits than its factorization.

1438296489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49997 (or 49994 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1438296489 is about 37924.8795515556. The cubic root of 1438296489 is about 1128.7977630514.

The spelling of 1438296489 in words is "one billion, four hundred thirty-eight million, two hundred ninety-six thousand, four hundred eighty-nine".