47194109 has 2 divisors, whose sum is σ = 47194110. Its totient is φ = 47194108.

The previous prime is 47194099. The next prime is 47194123. The reversal of 47194109 is 90149174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26491609 + 20702500 = 5147^2 + 4550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47194109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47194139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23597054 + 23597055.

It is an arithmetic number, because the mean of its divisors is an integer number (23597055).

Almost surely, 2^47194109 is an apocalyptic number.

It is an amenable number.

47194109 is a deficient number, since it is larger than the sum of its proper divisors (1).

47194109 is an equidigital number, since it uses as much as digits as its factorization.

47194109 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 47194109 is about 6869.7968674481. The cubic root of 47194109 is about 361.3787381347.

The spelling of 47194109 in words is "forty-seven million, one hundred ninety-four thousand, one hundred nine".