47403209 has 12 divisors (see below), whose sum is σ = 54891456. Its totient is φ = 40100952.

The previous prime is 47403203. The next prime is 47403217. The reversal of 47403209 is 90230474.

It is a de Polignac number, because none of the positive numbers 2^k-47403209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47403203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47732 + ... + 48714.

It is an arithmetic number, because the mean of its divisors is an integer number (4574288).

Almost surely, 2^47403209 is an apocalyptic number.

It is an amenable number.

47403209 is a deficient number, since it is larger than the sum of its proper divisors (7488247).

47403209 is an frugal number, since it uses more digits than its factorization.

47403209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 47403209 is about 6884.9988380536. The cubic root of 47403209 is about 361.9116645973.

The spelling of 47403209 in words is "forty-seven million, four hundred three thousand, two hundred nine".