98723129 has 2 divisors, whose sum is σ = 98723130. Its totient is φ = 98723128.

The previous prime is 98723113. The next prime is 98723137. The reversal of 98723129 is 92132789.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 10738729 = 9380^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 98723129 - 2⁴ = 98723113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (98723329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49361564 + 49361565.

It is an arithmetic number, because the mean of its divisors is an integer number (49361565).

Almost surely, 2^98723129 is an apocalyptic number.

It is an amenable number.

98723129 is a deficient number, since it is larger than the sum of its proper divisors (1).

98723129 is an equidigital number, since it uses as much as digits as its factorization.

98723129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 98723129 is about 9935.9513384477. The cubic root of 98723129 is about 462.1748446489.

The spelling of 98723129 in words is "ninety-eight million, seven hundred twenty-three thousand, one hundred twenty-nine".