1398239908 has 12 divisors (see below), whose sum is σ = 2635144540. Its totient is φ = 645341472.

The previous prime is 1398239893. The next prime is 1398239923. The reversal of 1398239908 is 8099328931.

It is an interprime number because it is at equal distance from previous prime (1398239893) and next prime (1398239923).

It can be written as a sum of positive squares in 2 ways, for example, as 376670464 + 1021569444 = 19408^2 + 31962^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 26889229 = 1398239908 / (1 + 3 + 9 + 8 + 2 + 3 + 9 + 9 + 0 + 8).

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, 13444563 + ... + 13444666.

Almost surely, 2^1398239908 is an apocalyptic number.

It is an amenable number.

1398239908 is a deficient number, since it is larger than the sum of its proper divisors (1236904632).

1398239908 is a wasteful number, since it uses less digits than its factorization.

1398239908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26889246 (or 26889244 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 1398239908 is about 37393.0462519437. The cubic root of 1398239908 is about 1118.2199370385.

The spelling of 1398239908 in words is "one billion, three hundred ninety-eight million, two hundred thirty-nine thousand, nine hundred eight".