101994047 has 2 divisors, whose sum is σ = 101994048. Its totient is φ = 101994046.

The previous prime is 101994037. The next prime is 101994059. The reversal of 101994047 is 740499101.

It is a weak prime.

It is an emirp because it is prime and its reverse (740499101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101994047 - 2⁴ = 101994031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101993998 and 101994016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101994017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50997023 + 50997024.

It is an arithmetic number, because the mean of its divisors is an integer number (50997024).

Almost surely, 2^101994047 is an apocalyptic number.

101994047 is a deficient number, since it is larger than the sum of its proper divisors (1).

101994047 is an equidigital number, since it uses as much as digits as its factorization.

101994047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 101994047 is about 10099.2102166457. The cubic root of 101994047 is about 467.2237829943.

The spelling of 101994047 in words is "one hundred one million, nine hundred ninety-four thousand, forty-seven".