101943899 has 4 divisors (see below), whose sum is σ = 101964264. Its totient is φ = 101923536.

The previous prime is 101943869. The next prime is 101943913. The reversal of 101943899 is 998349101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998349101 = 2417 ⋅413053.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101943899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101943869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3119 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (25491066).

Almost surely, 2^101943899 is an apocalyptic number.

101943899 is a deficient number, since it is larger than the sum of its proper divisors (20365).

101943899 is an equidigital number, since it uses as much as digits as its factorization.

101943899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20364.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 101943899 is about 10096.7271429904. The cubic root of 101943899 is about 467.1471962390.

The spelling of 101943899 in words is "one hundred one million, nine hundred forty-three thousand, eight hundred ninety-nine".