98776421 has 32 divisors (see below), whose sum is σ = 114912000. Its totient is φ = 84395520.

The previous prime is 98776397. The next prime is 98776441. The reversal of 98776421 is 12467789.

It is a de Polignac number, because none of the positive numbers 2^k-98776421 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98776441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662855 + ... + 663003.

It is an arithmetic number, because the mean of its divisors is an integer number (3591000).

Almost surely, 2^98776421 is an apocalyptic number.

It is an amenable number.

98776421 is a deficient number, since it is larger than the sum of its proper divisors (16135579).

98776421 is a wasteful number, since it uses less digits than its factorization.

98776421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 169344, while the sum is 44.

The square root of 98776421 is about 9938.6327530501. The cubic root of 98776421 is about 462.2579923081.

The spelling of 98776421 in words is "ninety-eight million, seven hundred seventy-six thousand, four hundred twenty-one".