98511923 has 4 divisors (see below), whose sum is σ = 104306760. Its totient is φ = 92717088.

The previous prime is 98511913. The next prime is 98511937. The reversal of 98511923 is 32911589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32911589 = 113 ⋅291253.

It is a cyclic number.

It is not a de Polignac number, because 98511923 - 2²⁰ = 97463347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98511913) 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, 2897393 + ... + 2897426.

It is an arithmetic number, because the mean of its divisors is an integer number (26076690).

Almost surely, 2^98511923 is an apocalyptic number.

98511923 is a deficient number, since it is larger than the sum of its proper divisors (5794837).

98511923 is a wasteful number, since it uses less digits than its factorization.

98511923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5794836.

The product of its digits is 19440, while the sum is 38.

The square root of 98511923 is about 9925.3172745258. The cubic root of 98511923 is about 461.8450205736.

The spelling of 98511923 in words is "ninety-eight million, five hundred eleven thousand, nine hundred twenty-three".