1339169987 has 4 divisors (see below), whose sum is σ = 1343394816. Its totient is φ = 1334945160.

The previous prime is 1339169983. The next prime is 1339169999. The reversal of 1339169987 is 7899619331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7899619331 = 1049 ⋅7530619.

It is a cyclic number.

It is not a de Polignac number, because 1339169987 - 2² = 1339169983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1339169981) 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, 2111939 + ... + 2112572.

It is an arithmetic number, because the mean of its divisors is an integer number (335848704).

Almost surely, 2^1339169987 is an apocalyptic number.

1339169987 is a deficient number, since it is larger than the sum of its proper divisors (4224829).

1339169987 is an equidigital number, since it uses as much as digits as its factorization.

1339169987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224828.

The product of its digits is 2204496, while the sum is 56.

The square root of 1339169987 is about 36594.6715656802. The cubic root of 1339169987 is about 1102.2460956880.

The spelling of 1339169987 in words is "one billion, three hundred thirty-nine million, one hundred sixty-nine thousand, nine hundred eighty-seven".