98390923691 has 2 divisors, whose sum is σ = 98390923692. Its totient is φ = 98390923690.

The previous prime is 98390923679. The next prime is 98390923739. The reversal of 98390923691 is 19632909389.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98390923691 - 2⁶ = 98390923627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98390923691.

It is not a weakly prime, because it can be changed into another prime (98390923391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49195461845 + 49195461846.

It is an arithmetic number, because the mean of its divisors is an integer number (49195461846).

Almost surely, 2^98390923691 is an apocalyptic number.

98390923691 is a deficient number, since it is larger than the sum of its proper divisors (1).

98390923691 is an equidigital number, since it uses as much as digits as its factorization.

98390923691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5668704, while the sum is 59.

The spelling of 98390923691 in words is "ninety-eight billion, three hundred ninety million, nine hundred twenty-three thousand, six hundred ninety-one".