1389027498 has 16 divisors (see below), whose sum is σ = 2830471776. Its totient is φ = 454273040.

The previous prime is 1389027473. The next prime is 1389027511. The reversal of 1389027498 is 8947209831.

It is a super-4 number, since 4×1389027498⁴ (a number of 38 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1389027498.

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, 2183688 + ... + 2184323.

It is an arithmetic number, because the mean of its divisors is an integer number (176904486).

Almost surely, 2^1389027498 is an apocalyptic number.

1389027498 is an abundant number, since it is smaller than the sum of its proper divisors (1441444278).

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

1389027498 is a wasteful number, since it uses less digits than its factorization.

1389027498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368069.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1389027498 is about 37269.6592149700. The cubic root of 1389027498 is about 1115.7586980381.

The spelling of 1389027498 in words is "one billion, three hundred eighty-nine million, twenty-seven thousand, four hundred ninety-eight".