1387572479 has 4 divisors (see below), whose sum is σ = 1408282584. Its totient is φ = 1366862376.

The previous prime is 1387572463. The next prime is 1387572481. The reversal of 1387572479 is 9742757831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1387572479 - 2⁴ = 1387572463 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 1387572479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387572449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10354952 + ... + 10355085.

It is an arithmetic number, because the mean of its divisors is an integer number (352070646).

Almost surely, 2^1387572479 is an apocalyptic number.

1387572479 is a deficient number, since it is larger than the sum of its proper divisors (20710105).

1387572479 is an equidigital number, since it uses as much as digits as its factorization.

1387572479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20710104.

The product of its digits is 2963520, while the sum is 53.

The square root of 1387572479 is about 37250.1339460679. The cubic root of 1387572479 is about 1115.3689727814.

The spelling of 1387572479 in words is "one billion, three hundred eighty-seven million, five hundred seventy-two thousand, four hundred seventy-nine".