99803791 has 4 divisors (see below), whose sum is σ = 100565784. Its totient is φ = 99041800.

The previous prime is 99803783. The next prime is 99803813. The reversal of 99803791 is 19730899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99803791 - 2³ = 99803783 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 (99803741) 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, 380800 + ... + 381061.

It is an arithmetic number, because the mean of its divisors is an integer number (25141446).

Almost surely, 2^99803791 is an apocalyptic number.

99803791 is a deficient number, since it is larger than the sum of its proper divisors (761993).

99803791 is a wasteful number, since it uses less digits than its factorization.

99803791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761992.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 99803791 is about 9990.1847330267. The cubic root of 99803791 is about 463.8551107637.

The spelling of 99803791 in words is "ninety-nine million, eight hundred three thousand, seven hundred ninety-one".