1098908389 has 8 divisors (see below), whose sum is σ = 1115992512. Its totient is φ = 1081953600.

The previous prime is 1098908359. The next prime is 1098908411. The reversal of 1098908389 is 9838098901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098908389 - 2⁵ = 1098908357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098908359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15139 + ... + 49264.

It is an arithmetic number, because the mean of its divisors is an integer number (139499064).

Almost surely, 2^1098908389 is an apocalyptic number.

It is an amenable number.

1098908389 is a deficient number, since it is larger than the sum of its proper divisors (17084123).

1098908389 is a wasteful number, since it uses less digits than its factorization.

1098908389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64667.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The square root of 1098908389 is about 33149.7871637210. The cubic root of 1098908389 is about 1031.9385332484.

The spelling of 1098908389 in words is "one billion, ninety-eight million, nine hundred eight thousand, three hundred eighty-nine".