99951143 has 4 divisors (see below), whose sum is σ = 105830640. Its totient is φ = 94071648.

The previous prime is 99951121. The next prime is 99951179. The reversal of 99951143 is 34115999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34115999 = 347 ⋅98317.

It is a cyclic number.

It is not a de Polignac number, because 99951143 - 2¹⁰ = 99950119 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 99951143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99951113) 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, 2939723 + ... + 2939756.

It is an arithmetic number, because the mean of its divisors is an integer number (26457660).

Almost surely, 2^99951143 is an apocalyptic number.

99951143 is a deficient number, since it is larger than the sum of its proper divisors (5879497).

99951143 is a wasteful number, since it uses less digits than its factorization.

99951143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879496.

The product of its digits is 43740, while the sum is 41.

The square root of 99951143 is about 9997.5568515513. The cubic root of 99951143 is about 464.0832796788.

The spelling of 99951143 in words is "ninety-nine million, nine hundred fifty-one thousand, one hundred forty-three".