47249109 has 8 divisors (see below), whose sum is σ = 69998720. Its totient is φ = 31499388.

The previous prime is 47249101. The next prime is 47249117. The reversal of 47249109 is 90194274.

It is an interprime number because it is at equal distance from previous prime (47249101) and next prime (47249117).

It is not a de Polignac number, because 47249109 - 2³ = 47249101 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 (47249101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874957 + ... + 875010.

It is an arithmetic number, because the mean of its divisors is an integer number (8749840).

Almost surely, 2^47249109 is an apocalyptic number.

It is an amenable number.

47249109 is a deficient number, since it is larger than the sum of its proper divisors (22749611).

47249109 is a wasteful number, since it uses less digits than its factorization.

47249109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749976 (or 1749970 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 47249109 is about 6873.7987314148. The cubic root of 47249109 is about 361.5190671922.

The spelling of 47249109 in words is "forty-seven million, two hundred forty-nine thousand, one hundred nine".