98993779 has 4 divisors (see below), whose sum is σ = 99015840. Its totient is φ = 98971720.

The previous prime is 98993749. The next prime is 98993813. The reversal of 98993779 is 97739989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98993779 - 2⁵ = 98993747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98993729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627 + ... + 14164.

It is an arithmetic number, because the mean of its divisors is an integer number (24753960).

Almost surely, 2^98993779 is an apocalyptic number.

98993779 is a deficient number, since it is larger than the sum of its proper divisors (22061).

98993779 is a wasteful number, since it uses less digits than its factorization.

98993779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22060.

The product of its digits is 7715736, while the sum is 61.

The square root of 98993779 is about 9949.5617491425. The cubic root of 98993779 is about 462.5968109003.

The spelling of 98993779 in words is "ninety-eight million, nine hundred ninety-three thousand, seven hundred seventy-nine".