1398534005 has 16 divisors (see below), whose sum is σ = 1831534848. Its totient is φ = 1016712000.

The previous prime is 1398534001. The next prime is 1398534037. The reversal of 1398534005 is 5004358931.

It is a happy number.

It is not a de Polignac number, because 1398534005 - 2² = 1398534001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1398534005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398534001) 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, 264740 + ... + 269970.

It is an arithmetic number, because the mean of its divisors is an integer number (114470928).

Almost surely, 2^1398534005 is an apocalyptic number.

It is an amenable number.

1398534005 is a deficient number, since it is larger than the sum of its proper divisors (433000843).

1398534005 is a wasteful number, since it uses less digits than its factorization.

1398534005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10108.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1398534005 is about 37396.9785544234. The cubic root of 1398534005 is about 1118.2983313284.

The spelling of 1398534005 in words is "one billion, three hundred ninety-eight million, five hundred thirty-four thousand, five".