1438660099 has 4 divisors (see below), whose sum is σ = 1438823736. Its totient is φ = 1438496464.

The previous prime is 1438660087. The next prime is 1438660109. The reversal of 1438660099 is 9900668341.

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

It is a cyclic number.

It is not a de Polignac number, because 1438660099 - 2⁹ = 1438659587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438660009) 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, 67834 + ... + 86479.

It is an arithmetic number, because the mean of its divisors is an integer number (359705934).

Almost surely, 2^1438660099 is an apocalyptic number.

1438660099 is a deficient number, since it is larger than the sum of its proper divisors (163637).

1438660099 is an equidigital number, since it uses as much as digits as its factorization.

1438660099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163636.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1438660099 is about 37929.6730674020. The cubic root of 1438660099 is about 1128.8928773238.

The spelling of 1438660099 in words is "one billion, four hundred thirty-eight million, six hundred sixty thousand, ninety-nine".