1389015276 has 24 divisors (see below), whose sum is σ = 3535675584. Its totient is φ = 420913680.

The previous prime is 1389015247. The next prime is 1389015289. The reversal of 1389015276 is 6725109831.

It is a super-2 number, since 2×1389015276² = 3858726873922712352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5261290 + ... + 5261553.

It is an arithmetic number, because the mean of its divisors is an integer number (147319816).

Almost surely, 2^1389015276 is an apocalyptic number.

It is an amenable number.

1389015276 is an abundant number, since it is smaller than the sum of its proper divisors (2146660308).

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

1389015276 is a wasteful number, since it uses less digits than its factorization.

1389015276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10522861 (or 10522859 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1389015276 is about 37269.4952474540. The cubic root of 1389015276 is about 1115.7554255224.

The spelling of 1389015276 in words is "one billion, three hundred eighty-nine million, fifteen thousand, two hundred seventy-six".