98982778 has 4 divisors (see below), whose sum is σ = 148474170. Its totient is φ = 49491388.

The previous prime is 98982757. The next prime is 98982833. The reversal of 98982778 is 87728989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87728989 = 569 ⋅154181.

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 34774609 = 8013^2 + 5897^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24745693 + ... + 24745696.

Almost surely, 2^98982778 is an apocalyptic number.

98982778 is a deficient number, since it is larger than the sum of its proper divisors (49491392).

98982778 is a wasteful number, since it uses less digits than its factorization.

98982778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49491391.

The product of its digits is 4064256, while the sum is 58.

The square root of 98982778 is about 9949.0088953624. The cubic root of 98982778 is about 462.5796744160.

The spelling of 98982778 in words is "ninety-eight million, nine hundred eighty-two thousand, seven hundred seventy-eight".