1389887875 has 8 divisors (see below), whose sum is σ = 1734580224. Its totient is φ = 1111910200.

The previous prime is 1389887833. The next prime is 1389887899. The reversal of 1389887875 is 5787889831.

It is not a de Polignac number, because 1389887875 - 2⁷ = 1389887747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5559427 + ... + 5559676.

It is an arithmetic number, because the mean of its divisors is an integer number (216822528).

Almost surely, 2^1389887875 is an apocalyptic number.

1389887875 is a deficient number, since it is larger than the sum of its proper divisors (344692349).

1389887875 is an equidigital number, since it uses as much as digits as its factorization.

1389887875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11119118 (or 11119108 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 64.

The square root of 1389887875 is about 37281.2000209221. The cubic root of 1389887875 is about 1115.9890210484.

The spelling of 1389887875 in words is "one billion, three hundred eighty-nine million, eight hundred eighty-seven thousand, eight hundred seventy-five".