1389328998 has 8 divisors (see below), whose sum is σ = 2778658008. Its totient is φ = 463109664.

The previous prime is 1389328987. The next prime is 1389329003. The reversal of 1389328998 is 8998239831.

It is a sphenic number, since it is the product of 3 distinct primes.

1389328998 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115777411 + ... + 115777422.

It is an arithmetic number, because the mean of its divisors is an integer number (347332251).

Almost surely, 2^1389328998 is an apocalyptic number.

1389328998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1389328998 is a wasteful number, since it uses less digits than its factorization.

1389328998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231554838.

The product of its digits is 6718464, while the sum is 60.

The square root of 1389328998 is about 37273.7038406435. The cubic root of 1389328998 is about 1115.8394204407.

The spelling of 1389328998 in words is "one billion, three hundred eighty-nine million, three hundred twenty-eight thousand, nine hundred ninety-eight".