1387471976 has 16 divisors (see below), whose sum is σ = 2838011040. Its totient is φ = 630669040.

The previous prime is 1387471933. The next prime is 1387472011. The reversal of 1387471976 is 6791747831.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7883276 + ... + 7883451.

It is an arithmetic number, because the mean of its divisors is an integer number (177375690).

Almost surely, 2^1387471976 is an apocalyptic number.

It is an amenable number.

1387471976 is an abundant number, since it is smaller than the sum of its proper divisors (1450539064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387471976 is a wasteful number, since it uses less digits than its factorization.

1387471976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15766744 (or 15766740 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 53.

The square root of 1387471976 is about 37248.7848929331. The cubic root of 1387471976 is about 1115.3420431048.

The spelling of 1387471976 in words is "one billion, three hundred eighty-seven million, four hundred seventy-one thousand, nine hundred seventy-six".