99391241 has 4 divisors (see below), whose sum is σ = 99512832. Its totient is φ = 99269652.

The previous prime is 99391151. The next prime is 99391247. The reversal of 99391241 is 14219399.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99391241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99391195 and 99391204.

It is not an unprimeable number, because it can be changed into a prime (99391247) 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, 59561 + ... + 61206.

It is an arithmetic number, because the mean of its divisors is an integer number (24878208).

Almost surely, 2^99391241 is an apocalyptic number.

It is an amenable number.

99391241 is a deficient number, since it is larger than the sum of its proper divisors (121591).

99391241 is a wasteful number, since it uses less digits than its factorization.

99391241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121590.

The product of its digits is 17496, while the sum is 38.

The square root of 99391241 is about 9969.5155850222. The cubic root of 99391241 is about 463.2150959734.

The spelling of 99391241 in words is "ninety-nine million, three hundred ninety-one thousand, two hundred forty-one".