99947333 has 4 divisors (see below), whose sum is σ = 102073920. Its totient is φ = 97820748.

The previous prime is 99947321. The next prime is 99947371. The reversal of 99947333 is 33374999.

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-99947333 is a prime.

It is a super-3 number, since 3×99947333³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 2126539 = 99947333 / (9 + 9 + 9 + 4 + 7 + 3 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99947303) 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, 1063223 + ... + 1063316.

It is an arithmetic number, because the mean of its divisors is an integer number (25518480).

Almost surely, 2^99947333 is an apocalyptic number.

It is an amenable number.

99947333 is a deficient number, since it is larger than the sum of its proper divisors (2126587).

99947333 is a wasteful number, since it uses less digits than its factorization.

99947333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126586.

The product of its digits is 551124, while the sum is 47.

The square root of 99947333 is about 9997.3663031821. The cubic root of 99947333 is about 464.0773828653.

The spelling of 99947333 in words is "ninety-nine million, nine hundred forty-seven thousand, three hundred thirty-three".