98821431 has 8 divisors (see below), whose sum is σ = 146402160. Its totient is φ = 65880936.

The previous prime is 98821423. The next prime is 98821433. The reversal of 98821431 is 13412889.

It is not a de Polignac number, because 98821431 - 2³ = 98821423 is a prime.

It is a super-2 number, since 2×98821431² = 19531350449775522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98821433) 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 7 ways as a sum of consecutive naturals, for example, 1830000 + ... + 1830053.

It is an arithmetic number, because the mean of its divisors is an integer number (18300270).

Almost surely, 2^98821431 is an apocalyptic number.

98821431 is a deficient number, since it is larger than the sum of its proper divisors (47580729).

98821431 is a wasteful number, since it uses less digits than its factorization.

98821431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660062 (or 3660056 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 98821431 is about 9940.8968911261. The cubic root of 98821431 is about 462.3281948677.

The spelling of 98821431 in words is "ninety-eight million, eight hundred twenty-one thousand, four hundred thirty-one".