98779297 has 4 divisors (see below), whose sum is σ = 99702576. Its totient is φ = 97856020.

The previous prime is 98779283. The next prime is 98779301. The reversal of 98779297 is 79297789.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79297789 = 47 ⋅1687187.

It is a cyclic number.

It is not a de Polignac number, because 98779297 - 2¹⁹ = 98255009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98770297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461479 + ... + 461692.

It is an arithmetic number, because the mean of its divisors is an integer number (24925644).

Almost surely, 2^98779297 is an apocalyptic number.

98779297 is the 5313-rd centered heptagonal number.

It is an amenable number.

98779297 is a deficient number, since it is larger than the sum of its proper divisors (923279).

98779297 is a wasteful number, since it uses less digits than its factorization.

98779297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923278.

The product of its digits is 4000752, while the sum is 58.

The square root of 98779297 is about 9938.7774399068. Note that the first 3 decimals coincide. The cubic root of 98779297 is about 462.2624786726.

The spelling of 98779297 in words is "ninety-eight million, seven hundred seventy-nine thousand, two hundred ninety-seven".