98778444 has 12 divisors (see below), whose sum is σ = 230483064. Its totient is φ = 32926144.

The previous prime is 98778413. The next prime is 98778451. The reversal of 98778444 is 44487789.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×98778444² = 19514361998122272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4115757 + ... + 4115780.

It is an arithmetic number, because the mean of its divisors is an integer number (19206922).

Almost surely, 2^98778444 is an apocalyptic number.

It is an amenable number.

98778444 is an abundant number, since it is smaller than the sum of its proper divisors (131704620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98778444 is a wasteful number, since it uses less digits than its factorization.

98778444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231544 (or 8231542 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 98778444 is about 9938.7345270915. The cubic root of 98778444 is about 462.2611480597.

The spelling of 98778444 in words is "ninety-eight million, seven hundred seventy-eight thousand, four hundred forty-four".