99549797 has 4 divisors (see below), whose sum is σ = 104789280. Its totient is φ = 94310316.

The previous prime is 99549787. The next prime is 99549799. The reversal of 99549797 is 79794599.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79794599 = 1783 ⋅44753.

It is a cyclic number.

It is not a de Polignac number, because 99549797 - 2⁴ = 99549781 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 (99549799) 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, 2619713 + ... + 2619750.

It is an arithmetic number, because the mean of its divisors is an integer number (26197320).

Almost surely, 2^99549797 is an apocalyptic number.

It is an amenable number.

99549797 is a deficient number, since it is larger than the sum of its proper divisors (5239483).

99549797 is a wasteful number, since it uses less digits than its factorization.

99549797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239482.

The product of its digits is 6429780, while the sum is 59.

The square root of 99549797 is about 9977.4644574661. The cubic root of 99549797 is about 463.4612830331.

The spelling of 99549797 in words is "ninety-nine million, five hundred forty-nine thousand, seven hundred ninety-seven".