899395943 has 4 divisors (see below), whose sum is σ = 900269328. Its totient is φ = 898522560.

The previous prime is 899395919. The next prime is 899395969. The reversal of 899395943 is 349593998.

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 899395943 - 2¹⁶ = 899330407 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 (899395643) 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, 435146 + ... + 437207.

It is an arithmetic number, because the mean of its divisors is an integer number (225067332).

Almost surely, 2^899395943 is an apocalyptic number.

899395943 is a deficient number, since it is larger than the sum of its proper divisors (873385).

899395943 is a wasteful number, since it uses less digits than its factorization.

899395943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873384.

The product of its digits is 9447840, while the sum is 59.

The square root of 899395943 is about 29989.9306934844. The cubic root of 899395943 is about 965.2733323284.

The spelling of 899395943 in words is "eight hundred ninety-nine million, three hundred ninety-five thousand, nine hundred forty-three".