98388431 has 4 divisors (see below), whose sum is σ = 98439792. Its totient is φ = 98337072.

The previous prime is 98388427. The next prime is 98388473. The reversal of 98388431 is 13488389.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13488389 = 47 ⋅286987.

It is a cyclic number.

It is not a de Polignac number, because 98388431 - 2² = 98388427 is a prime.

It is a super-2 number, since 2×98388431² = 19360566709283522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98388421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22691 + ... + 26676.

It is an arithmetic number, because the mean of its divisors is an integer number (24609948).

Almost surely, 2^98388431 is an apocalyptic number.

98388431 is a deficient number, since it is larger than the sum of its proper divisors (51361).

98388431 is a wasteful number, since it uses less digits than its factorization.

98388431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51360.

The product of its digits is 165888, while the sum is 44.

The square root of 98388431 is about 9919.0942630867. The cubic root of 98388431 is about 461.6519542173.

The spelling of 98388431 in words is "ninety-eight million, three hundred eighty-eight thousand, four hundred thirty-one".