1387003499 has 4 divisors (see below), whose sum is σ = 1585146864. Its totient is φ = 1188860136.

The previous prime is 1387003489. The next prime is 1387003529. The reversal of 1387003499 is 9943007831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9943007831 = 29 ⋅342862339.

It is a cyclic number.

It is not a de Polignac number, because 1387003499 - 2⁴ = 1387003483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1387003489) 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, 99071672 + ... + 99071685.

It is an arithmetic number, because the mean of its divisors is an integer number (396286716).

Almost surely, 2^1387003499 is an apocalyptic number.

1387003499 is a deficient number, since it is larger than the sum of its proper divisors (198143365).

1387003499 is an equidigital number, since it uses as much as digits as its factorization.

1387003499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198143364.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1387003499 is about 37242.4958750082. The cubic root of 1387003499 is about 1115.2164980072.

The spelling of 1387003499 in words is "one billion, three hundred eighty-seven million, three thousand, four hundred ninety-nine".