98785981 has 4 divisors (see below), whose sum is σ = 112898272. Its totient is φ = 84673692.

The previous prime is 98785969. The next prime is 98786003. The reversal of 98785981 is 18958789.

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.

It is a cyclic number.

It is not a de Polignac number, because 98785981 - 2⁹ = 98785469 is a prime.

It is a super-2 number, since 2×98785981² = 19517340084264722, 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 (98785081) 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, 7056135 + ... + 7056148.

It is an arithmetic number, because the mean of its divisors is an integer number (28224568).

Almost surely, 2^98785981 is an apocalyptic number.

It is an amenable number.

98785981 is a deficient number, since it is larger than the sum of its proper divisors (14112291).

98785981 is a wasteful number, since it uses less digits than its factorization.

98785981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14112290.

The product of its digits is 1451520, while the sum is 55.

The square root of 98785981 is about 9939.1136928803. The cubic root of 98785981 is about 462.2729049219.

It can be divided in two parts, 987 and 85981, that added together give a palindrome (86968).

The spelling of 98785981 in words is "ninety-eight million, seven hundred eighty-five thousand, nine hundred eighty-one".