99689503 has 2 divisors, whose sum is σ = 99689504. Its totient is φ = 99689502.

The previous prime is 99689497. The next prime is 99689543. The reversal of 99689503 is 30598699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99689503 - 2²⁵ = 66135071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99689543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49844751 + 49844752.

It is an arithmetic number, because the mean of its divisors is an integer number (49844752).

Almost surely, 2^99689503 is an apocalyptic number.

99689503 is a deficient number, since it is larger than the sum of its proper divisors (1).

99689503 is an equidigital number, since it uses as much as digits as its factorization.

99689503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 99689503 is about 9984.4630802062. The cubic root of 99689503 is about 463.6779854901.

The spelling of 99689503 in words is "ninety-nine million, six hundred eighty-nine thousand, five hundred three".