98749999 has 2 divisors, whose sum is σ = 98750000. Its totient is φ = 98749998.

The previous prime is 98749951. The next prime is 98750021. The reversal of 98749999 is 99994789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98749999 - 2⁹ = 98749487 is a prime.

98749999 is a modest number, since divided by 9999 gives 9874 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 98749999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98749919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49374999 + 49375000.

It is an arithmetic number, because the mean of its divisors is an integer number (49375000).

Almost surely, 2^98749999 is an apocalyptic number.

98749999 is a deficient number, since it is larger than the sum of its proper divisors (1).

98749999 is an equidigital number, since it uses as much as digits as its factorization.

98749999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13226976, while the sum is 64.

The square root of 98749999 is about 9937.3034068604. The cubic root of 98749999 is about 462.2167717086.

The spelling of 98749999 in words is "ninety-eight million, seven hundred forty-nine thousand, nine hundred ninety-nine".