99487799 has 4 divisors (see below), whose sum is σ = 100368336. Its totient is φ = 98607264.

The previous prime is 99487793. The next prime is 99487823. The reversal of 99487799 is 99778499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99778499 = 59 ⋅1691161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99487799 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 (99487793) 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, 440099 + ... + 440324.

It is an arithmetic number, because the mean of its divisors is an integer number (25092084).

Almost surely, 2^99487799 is an apocalyptic number.

99487799 is a deficient number, since it is larger than the sum of its proper divisors (880537).

99487799 is a wasteful number, since it uses less digits than its factorization.

99487799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880536.

The product of its digits is 10287648, while the sum is 62.

The square root of 99487799 is about 9974.3570720122. The cubic root of 99487799 is about 463.3650509948.

The spelling of 99487799 in words is "ninety-nine million, four hundred eighty-seven thousand, seven hundred ninety-nine".