98817491 has 16 divisors (see below), whose sum is σ = 105923328. Its totient is φ = 92016000.

The previous prime is 98817457. The next prime is 98817497. The reversal of 98817491 is 19471889.

It is a cyclic number.

It is not a de Polignac number, because 98817491 - 2¹⁴ = 98801107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98817497) 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 15 ways as a sum of consecutive naturals, for example, 115421 + ... + 116273.

It is an arithmetic number, because the mean of its divisors is an integer number (6620208).

Almost surely, 2^98817491 is an apocalyptic number.

98817491 is a deficient number, since it is larger than the sum of its proper divisors (7105837).

98817491 is a wasteful number, since it uses less digits than its factorization.

98817491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its digits is 145152, while the sum is 47.

The square root of 98817491 is about 9940.6987178970. The cubic root of 98817491 is about 462.3220504606.

The spelling of 98817491 in words is "ninety-eight million, eight hundred seventeen thousand, four hundred ninety-one".