1398605059 has 4 divisors (see below), whose sum is σ = 1398784000. Its totient is φ = 1398426120.

The previous prime is 1398605027. The next prime is 1398605063. The reversal of 1398605059 is 9505068931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9505068931 = 1373 ⋅6922847.

It is a cyclic number.

It is not a de Polignac number, because 1398605059 - 2⁵ = 1398605027 is a prime.

It is a super-2 number, since 2×1398605059² = 3912192222120786962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398605009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77184 + ... + 93565.

It is an arithmetic number, because the mean of its divisors is an integer number (349696000).

Almost surely, 2^1398605059 is an apocalyptic number.

1398605059 is a deficient number, since it is larger than the sum of its proper divisors (178941).

1398605059 is an equidigital number, since it uses as much as digits as its factorization.

1398605059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178940.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 1398605059 is about 37397.9285388910. The cubic root of 1398605059 is about 1118.3172697844.

The spelling of 1398605059 in words is "one billion, three hundred ninety-eight million, six hundred five thousand, fifty-nine".