1389377084 has 12 divisors (see below), whose sum is σ = 2497123944. Its totient is φ = 675913104.

The previous prime is 1389377083. The next prime is 1389377107. The reversal of 1389377084 is 4807739831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389377083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4693694 + ... + 4693989.

It is an arithmetic number, because the mean of its divisors is an integer number (208093662).

Almost surely, 2^1389377084 is an apocalyptic number.

It is an amenable number.

1389377084 is a deficient number, since it is larger than the sum of its proper divisors (1107746860).

1389377084 is a wasteful number, since it uses less digits than its factorization.

1389377084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387724 (or 9387722 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 1389377084 is about 37274.3488742594. The cubic root of 1389377084 is about 1115.8522937140.

The spelling of 1389377084 in words is "one billion, three hundred eighty-nine million, three hundred seventy-seven thousand, eighty-four".