99213047 has 4 divisors (see below), whose sum is σ = 99821880. Its totient is φ = 98604216.

The previous prime is 99213013. The next prime is 99213061. The reversal of 99213047 is 74031299.

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 99213047 - 2⁸ = 99212791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99212998 and 99213016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99213067) 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, 304172 + ... + 304497.

It is an arithmetic number, because the mean of its divisors is an integer number (24955470).

Almost surely, 2^99213047 is an apocalyptic number.

99213047 is a deficient number, since it is larger than the sum of its proper divisors (608833).

99213047 is a wasteful number, since it uses less digits than its factorization.

99213047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608832.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 99213047 is about 9960.5746320180. The cubic root of 99213047 is about 462.9381046683.

The spelling of 99213047 in words is "ninety-nine million, two hundred thirteen thousand, forty-seven".