98384257 has 4 divisors (see below), whose sum is σ = 98404096. Its totient is φ = 98364420.

The previous prime is 98384239. The next prime is 98384263. The reversal of 98384257 is 75248389.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75248389 = 127 ⋅592507.

It is a cyclic number.

It is not a de Polignac number, because 98384257 - 2¹⁵ = 98351489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98384267) 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, 4888 + ... + 14854.

It is an arithmetic number, because the mean of its divisors is an integer number (24601024).

Almost surely, 2^98384257 is an apocalyptic number.

It is an amenable number.

98384257 is a deficient number, since it is larger than the sum of its proper divisors (19839).

98384257 is an equidigital number, since it uses as much as digits as its factorization.

98384257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19838.

The product of its digits is 483840, while the sum is 46.

The square root of 98384257 is about 9918.8838585801. The cubic root of 98384257 is about 461.6454257989.

The spelling of 98384257 in words is "ninety-eight million, three hundred eighty-four thousand, two hundred fifty-seven".