99487123 has 2 divisors, whose sum is σ = 99487124. Its totient is φ = 99487122.

The previous prime is 99487099. The next prime is 99487159. The reversal of 99487123 is 32178499.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99487123 is a prime.

It is a super-3 number, since 3×99487123³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99487123.

It is not a weakly prime, because it can be changed into another prime (99487163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49743561 + 49743562.

It is an arithmetic number, because the mean of its divisors is an integer number (49743562).

Almost surely, 2^99487123 is an apocalyptic number.

99487123 is the 5332-nd centered heptagonal number.

99487123 is a deficient number, since it is larger than the sum of its proper divisors (1).

99487123 is an equidigital number, since it uses as much as digits as its factorization.

99487123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 99487123 is about 9974.3231850587. The cubic root of 99487123 is about 463.3640015010.

It can be divided in two parts, 9948 and 7123, that added together give a palindrome (17071).

The spelling of 99487123 in words is "ninety-nine million, four hundred eighty-seven thousand, one hundred twenty-three".