1398998968 has 8 divisors (see below), whose sum is σ = 2623123080. Its totient is φ = 699499480.

The previous prime is 1398998959. The next prime is 1398998983. The reversal of 1398998968 is 8698998931.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1398998968² = 3914396224930130048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1398998897 and 1398998906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87437428 + ... + 87437443.

It is an arithmetic number, because the mean of its divisors is an integer number (327890385).

Almost surely, 2^1398998968 is an apocalyptic number.

It is an amenable number.

1398998968 is a deficient number, since it is larger than the sum of its proper divisors (1224124112).

1398998968 is a wasteful number, since it uses less digits than its factorization.

1398998968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174874877 (or 174874873 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 70.

The square root of 1398998968 is about 37403.1946229196. The cubic root of 1398998968 is about 1118.4222491196.

The spelling of 1398998968 in words is "one billion, three hundred ninety-eight million, nine hundred ninety-eight thousand, nine hundred sixty-eight".