1398888339 has 4 divisors (see below), whose sum is σ = 1865184456. Its totient is φ = 932592224.

The previous prime is 1398888329. The next prime is 1398888371. The reversal of 1398888339 is 9338888931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9338888931 = 3 ⋅3112962977.

It is a cyclic number.

It is not a de Polignac number, because 1398888339 - 2⁹ = 1398887827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1398888329) 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, 233148054 + ... + 233148059.

It is an arithmetic number, because the mean of its divisors is an integer number (466296114).

Almost surely, 2^1398888339 is an apocalyptic number.

1398888339 is a deficient number, since it is larger than the sum of its proper divisors (466296117).

1398888339 is an equidigital number, since it uses as much as digits as its factorization.

1398888339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466296116.

The product of its digits is 8957952, while the sum is 60.

The square root of 1398888339 is about 37401.7157226777. The cubic root of 1398888339 is about 1118.3927677548.

The spelling of 1398888339 in words is "one billion, three hundred ninety-eight million, eight hundred eighty-eight thousand, three hundred thirty-nine".