1387469860 has 24 divisors (see below), whose sum is σ = 3329928000. Its totient is φ = 475703904.

The previous prime is 1387469857. The next prime is 1387469879. The reversal of 1387469860 is 689647831.

It is a happy number.

It is a super-2 number, since 2×1387469860² = 3850145224816839200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1387469798 and 1387469807.

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 7 ways as a sum of consecutive naturals, for example, 4955110 + ... + 4955389.

It is an arithmetic number, because the mean of its divisors is an integer number (138747000).

Almost surely, 2^1387469860 is an apocalyptic number.

1387469860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1387469860 is an abundant number, since it is smaller than the sum of its proper divisors (1942458140).

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

1387469860 is a wasteful number, since it uses less digits than its factorization.

1387469860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9910515 (or 9910513 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1387469860 is about 37248.7564893112. The cubic root of 1387469860 is about 1115.3414761107.

The spelling of 1387469860 in words is "one billion, three hundred eighty-seven million, four hundred sixty-nine thousand, eight hundred sixty".