1439107987 has 8 divisors (see below), whose sum is σ = 1530986832. Its totient is φ = 1348032000.

The previous prime is 1439107973. The next prime is 1439108029. The reversal of 1439107987 is 7897019341.

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

It is a de Polignac number, because none of the positive numbers 2^k-1439107987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1439107987.

It is not an unprimeable number, because it can be changed into a prime (1439104987) 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, 197014 + ... + 204187.

It is an arithmetic number, because the mean of its divisors is an integer number (191373354).

Almost surely, 2^1439107987 is an apocalyptic number.

1439107987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1439107987 is a deficient number, since it is larger than the sum of its proper divisors (91878845).

1439107987 is a wasteful number, since it uses less digits than its factorization.

1439107987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401429.

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 1439107987 is about 37935.5767980401. The cubic root of 1439107987 is about 1129.0100152802.

The spelling of 1439107987 in words is "one billion, four hundred thirty-nine million, one hundred seven thousand, nine hundred eighty-seven".