1089898704 has 30 divisors (see below), whose sum is σ = 3050203026. Its totient is φ = 363299520.

The previous prime is 1089898699. The next prime is 1089898709. The reversal of 1089898704 is 4078989801.

It is an interprime number because it is at equal distance from previous prime (1089898699) and next prime (1089898709).

It can be written as a sum of positive squares in only one way, i.e., 1089000000 + 898704 = 33000^2 + 948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089898709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3784227 + ... + 3784514.

Almost surely, 2^1089898704 is an apocalyptic number.

It is an amenable number.

1089898704 is an abundant number, since it is smaller than the sum of its proper divisors (1960304322).

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

1089898704 is a wasteful number, since it uses less digits than its factorization.

1089898704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568755 (or 7568746 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 1089898704 is about 33013.6139191092. The cubic root of 1089898704 is about 1029.1105854569.

It can be divided in two parts, 1089 and 898704, that multiplied together give a square (978688656 = 31284²).

The spelling of 1089898704 in words is "one billion, eighty-nine million, eight hundred ninety-eight thousand, seven hundred four".