1098905404 has 6 divisors (see below), whose sum is σ = 1923084464. Its totient is φ = 549452700.

The previous prime is 1098905393. The next prime is 1098905407. The reversal of 1098905404 is 4045098901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098905407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137363172 + ... + 137363179.

Almost surely, 2^1098905404 is an apocalyptic number.

It is an amenable number.

1098905404 is a deficient number, since it is larger than the sum of its proper divisors (824179060).

1098905404 is a wasteful number, since it uses less digits than its factorization.

1098905404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274726355 (or 274726353 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1098905404 is about 33149.7421407769. The cubic root of 1098905404 is about 1031.9375988850.

The spelling of 1098905404 in words is "one billion, ninety-eight million, nine hundred five thousand, four hundred four".