1387692089 has 8 divisors (see below), whose sum is σ = 1608271488. Its totient is φ = 1172697120.

The previous prime is 1387692041. The next prime is 1387692107. The reversal of 1387692089 is 9802967831.

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

It is not a de Polignac number, because 1387692089 - 2¹² = 1387687993 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 1387692089.

It is not an unprimeable number, because it can be changed into a prime (1387691089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395572 + ... + 1396565.

It is an arithmetic number, because the mean of its divisors is an integer number (201033936).

Almost surely, 2^1387692089 is an apocalyptic number.

It is an amenable number.

1387692089 is a deficient number, since it is larger than the sum of its proper divisors (220579399).

1387692089 is an equidigital number, since it uses as much as digits as its factorization.

1387692089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792215.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 1387692089 is about 37251.7394090531. The cubic root of 1387692089 is about 1115.4010204646.

The spelling of 1387692089 in words is "one billion, three hundred eighty-seven million, six hundred ninety-two thousand, eighty-nine".