1389359088 has 80 divisors (see below), whose sum is σ = 4294759840. Its totient is φ = 427493376.

The previous prime is 1389358987. The next prime is 1389359089. The reversal of 1389359088 is 8809539831.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389359089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118081 + ... + 129312.

It is an arithmetic number, because the mean of its divisors is an integer number (53684498).

Almost surely, 2^1389359088 is an apocalyptic number.

1389359088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1389359088 is an abundant number, since it is smaller than the sum of its proper divisors (2905400752).

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

1389359088 is a wasteful number, since it uses less digits than its factorization.

1389359088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247423 (or 247411 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 1389359088 is about 37274.1074742240. The cubic root of 1389359088 is about 1115.8474759759.

The spelling of 1389359088 in words is "one billion, three hundred eighty-nine million, three hundred fifty-nine thousand, eighty-eight".