1387008329 has 4 divisors (see below), whose sum is σ = 1585152384. Its totient is φ = 1188864276.

The previous prime is 1387008263. The next prime is 1387008331. The reversal of 1387008329 is 9238007831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9238007831 = 13 ⋅710615987.

It is a cyclic number.

It is not a de Polignac number, because 1387008329 - 2²⁰ = 1385959753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387008349) 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, 99072017 + ... + 99072030.

It is an arithmetic number, because the mean of its divisors is an integer number (396288096).

Almost surely, 2^1387008329 is an apocalyptic number.

It is an amenable number.

1387008329 is a deficient number, since it is larger than the sum of its proper divisors (198144055).

1387008329 is an equidigital number, since it uses as much as digits as its factorization.

1387008329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198144054.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1387008329 is about 37242.5607202298. The cubic root of 1387008329 is about 1115.2177925220.

The spelling of 1387008329 in words is "one billion, three hundred eighty-seven million, eight thousand, three hundred twenty-nine".