47446109 has 4 divisors (see below), whose sum is σ = 47459904. Its totient is φ = 47432316.

The previous prime is 47445991. The next prime is 47446111. The reversal of 47446109 is 90164474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90164474 = 2 ⋅45082237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47446109 is a prime.

It is a super-2 number, since 2×47446109² = 4502266518479762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47446129) 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, 2924 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (11864976).

Almost surely, 2^47446109 is an apocalyptic number.

It is an amenable number.

47446109 is a deficient number, since it is larger than the sum of its proper divisors (13795).

47446109 is an equidigital number, since it uses as much as digits as its factorization.

47446109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 47446109 is about 6888.1136024314. The cubic root of 47446109 is about 362.0208086082.

The spelling of 47446109 in words is "forty-seven million, four hundred forty-six thousand, one hundred nine".