99487511 has 4 divisors (see below), whose sum is σ = 101173800. Its totient is φ = 97801224.

The previous prime is 99487501. The next prime is 99487513. The reversal of 99487511 is 11578499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11578499 = 23 ⋅503413.

It is a cyclic number.

It is not a de Polignac number, because 99487511 - 2¹⁸ = 99225367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99487513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843056 + ... + 843173.

It is an arithmetic number, because the mean of its divisors is an integer number (25293450).

Almost surely, 2^99487511 is an apocalyptic number.

99487511 is a deficient number, since it is larger than the sum of its proper divisors (1686289).

99487511 is a wasteful number, since it uses less digits than its factorization.

99487511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686288.

The product of its digits is 90720, while the sum is 44.

The square root of 99487511 is about 9974.3426349810. The cubic root of 99487511 is about 463.3646038738.

The spelling of 99487511 in words is "ninety-nine million, four hundred eighty-seven thousand, five hundred eleven".