98781129 has 6 divisors (see below), whose sum is σ = 142683866. Its totient is φ = 65854080.

The previous prime is 98781091. The next prime is 98781161. The reversal of 98781129 is 92118789.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 45198729 = 7320^2 + 6723^2 .

It is not a de Polignac number, because 98781129 - 2¹⁹ = 98256841 is a prime.

It is a super-2 number, since 2×98781129² = 19515422893029282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98781829) 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, 5487832 + ... + 5487849.

Almost surely, 2^98781129 is an apocalyptic number.

It is an amenable number.

98781129 is a deficient number, since it is larger than the sum of its proper divisors (43902737).

98781129 is a wasteful number, since it uses less digits than its factorization.

98781129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10975687 (or 10975684 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 98781129 is about 9938.8696037326. The cubic root of 98781129 is about 462.2653364226.

The spelling of 98781129 in words is "ninety-eight million, seven hundred eighty-one thousand, one hundred twenty-nine".