98123777 has 2 divisors, whose sum is σ = 98123778. Its totient is φ = 98123776.

The previous prime is 98123747. The next prime is 98123803. The reversal of 98123777 is 77732189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57623281 + 40500496 = 7591^2 + 6364^2 .

It is a cyclic number.

It is not a de Polignac number, because 98123777 - 2⁶ = 98123713 is a prime.

It is a super-2 number, since 2×98123777² = 19256551225491458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98123737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49061888 + 49061889.

It is an arithmetic number, because the mean of its divisors is an integer number (49061889).

It is a Proth number, since it is equal to 5989 ⋅ 2¹⁴ + 1 and 5989 < 2¹⁴.

Almost surely, 2^98123777 is an apocalyptic number.

It is an amenable number.

98123777 is a deficient number, since it is larger than the sum of its proper divisors (1).

98123777 is an equidigital number, since it uses as much as digits as its factorization.

98123777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 98123777 is about 9905.7446464160. The cubic root of 98123777 is about 461.2376516158.

The spelling of 98123777 in words is "ninety-eight million, one hundred twenty-three thousand, seven hundred seventy-seven".