98363991 has 16 divisors (see below), whose sum is σ = 143336448. Its totient is φ = 59505600.

The previous prime is 98363987. The next prime is 98364011. The reversal of 98363991 is 19936389.

It is a happy number.

It is not a de Polignac number, because 98363991 - 2² = 98363987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98363991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98363971) 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, 17946 + ... + 22776.

It is an arithmetic number, because the mean of its divisors is an integer number (8958528).

Almost surely, 2^98363991 is an apocalyptic number.

98363991 is a deficient number, since it is larger than the sum of its proper divisors (44972457).

98363991 is a wasteful number, since it uses less digits than its factorization.

98363991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462.

The product of its digits is 314928, while the sum is 48.

The square root of 98363991 is about 9917.8622192487. The cubic root of 98363991 is about 461.6137257792.

The spelling of 98363991 in words is "ninety-eight million, three hundred sixty-three thousand, nine hundred ninety-one".