98023921 has 4 divisors (see below), whose sum is σ = 103790052. Its totient is φ = 92257792.

The previous prime is 98023909. The next prime is 98023927. The reversal of 98023921 is 12932089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12932089 = 1861 ⋅6949.

It can be written as a sum of positive squares in 2 ways, for example, as 79014321 + 19009600 = 8889^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 98023921 - 2¹¹ = 98021873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98023927) 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, 2883040 + ... + 2883073.

It is an arithmetic number, because the mean of its divisors is an integer number (25947513).

Almost surely, 2^98023921 is an apocalyptic number.

It is an amenable number.

98023921 is a deficient number, since it is larger than the sum of its proper divisors (5766131).

98023921 is a wasteful number, since it uses less digits than its factorization.

98023921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5766130.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 98023921 is about 9900.7030558441. The cubic root of 98023921 is about 461.0811384829.

The spelling of 98023921 in words is "ninety-eight million, twenty-three thousand, nine hundred twenty-one".