1389039495 has 16 divisors (see below), whose sum is σ = 2225270880. Its totient is φ = 739885184.

The previous prime is 1389039493. The next prime is 1389039499. The reversal of 1389039495 is 5949309831.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1389039495 - 2¹ = 1389039493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389039493) 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, 46140 + ... + 70049.

It is an arithmetic number, because the mean of its divisors is an integer number (139079430).

Almost surely, 2^1389039495 is an apocalyptic number.

1389039495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1389039495 is a deficient number, since it is larger than the sum of its proper divisors (836231385).

1389039495 is a wasteful number, since it uses less digits than its factorization.

1389039495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116994.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 1389039495 is about 37269.8201632366. The cubic root of 1389039495 is about 1115.7619102900.

The spelling of 1389039495 in words is "one billion, three hundred eighty-nine million, thirty-nine thousand, four hundred ninety-five".