1398798930 has 64 divisors (see below), whose sum is σ = 3612947328. Its totient is φ = 345308160.

The previous prime is 1398798923. The next prime is 1398798953. The reversal of 1398798930 is 398978931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8629 + ... + 53591.

It is an arithmetic number, because the mean of its divisors is an integer number (56452302).

Almost surely, 2^1398798930 is an apocalyptic number.

1398798930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398798930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806473664).

1398798930 is an abundant number, since it is smaller than the sum of its proper divisors (2214148398).

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

1398798930 is a wasteful number, since it uses less digits than its factorization.

1398798930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45051.

The product of its (nonzero) digits is 2939328, while the sum is 57.

The square root of 1398798930 is about 37400.5204509242. The cubic root of 1398798930 is about 1118.3689401419.

The spelling of 1398798930 in words is "one billion, three hundred ninety-eight million, seven hundred ninety-eight thousand, nine hundred thirty".