1398000856 has 16 divisors (see below), whose sum is σ = 2995716240. Its totient is φ = 599143200.

The previous prime is 1398000839. The next prime is 1398000869. The reversal of 1398000856 is 6580008931.

It is a happy 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, 12482095 + ... + 12482206.

It is an arithmetic number, because the mean of its divisors is an integer number (187232265).

Almost surely, 2^1398000856 is an apocalyptic number.

It is an amenable number.

1398000856 is an abundant number, since it is smaller than the sum of its proper divisors (1597715384).

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

1398000856 is a wasteful number, since it uses less digits than its factorization.

1398000856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24964314 (or 24964310 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1398000856 is about 37389.8496386386. The cubic root of 1398000856 is about 1118.1562074057.

The spelling of 1398000856 in words is "one billion, three hundred ninety-eight million, eight hundred fifty-six", and thus it is an aban number.