98661929 has 4 divisors (see below), whose sum is σ = 99770580. Its totient is φ = 97553280.

The previous prime is 98661923. The next prime is 98661947. The reversal of 98661929 is 92916689.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 93644329 = 2240^2 + 9677^2 .

It is a cyclic number.

It is not a de Polignac number, because 98661929 - 2²⁰ = 97613353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98661923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554192 + ... + 554369.

It is an arithmetic number, because the mean of its divisors is an integer number (24942645).

Almost surely, 2^98661929 is an apocalyptic number.

It is an amenable number.

98661929 is a deficient number, since it is larger than the sum of its proper divisors (1108651).

98661929 is a wasteful number, since it uses less digits than its factorization.

98661929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108650.

The product of its digits is 419904, while the sum is 50.

The square root of 98661929 is about 9932.8711357794. The cubic root of 98661929 is about 462.0793217875.

The spelling of 98661929 in words is "ninety-eight million, six hundred sixty-one thousand, nine hundred twenty-nine".