1398298806 has 24 divisors (see below), whose sum is σ = 3189103320. Its totient is φ = 441567936.

The previous prime is 1398298801. The next prime is 1398298813. The reversal of 1398298806 is 6088928931.

It is a happy number.

It is a super-2 number, since 2×1398298806² = 3910479101722051272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398298801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2043955 + ... + 2044638.

It is an arithmetic number, because the mean of its divisors is an integer number (132879305).

Almost surely, 2^1398298806 is an apocalyptic number.

1398298806 is an abundant number, since it is smaller than the sum of its proper divisors (1790804514).

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

1398298806 is a wasteful number, since it uses less digits than its factorization.

1398298806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088620 (or 4088617 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 1398298806 is about 37393.8337964964. The cubic root of 1398298806 is about 1118.2356377283.

The spelling of 1398298806 in words is "one billion, three hundred ninety-eight million, two hundred ninety-eight thousand, eight hundred six".