99798047 has 4 divisors (see below), whose sum is σ = 99872736. Its totient is φ = 99723360.

The previous prime is 99797987. The next prime is 99798067. The reversal of 99798047 is 74089799.

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 99798047 - 2¹⁸ = 99535903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99798047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99798067) 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, 35303 + ... + 38024.

It is an arithmetic number, because the mean of its divisors is an integer number (24968184).

Almost surely, 2^99798047 is an apocalyptic number.

99798047 is a deficient number, since it is larger than the sum of its proper divisors (74689).

99798047 is a wasteful number, since it uses less digits than its factorization.

99798047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74688.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 99798047 is about 9989.8972467188. The cubic root of 99798047 is about 463.8462118537.

The spelling of 99798047 in words is "ninety-nine million, seven hundred ninety-eight thousand, forty-seven".