47477309 has 8 divisors (see below), whose sum is σ = 51922080. Its totient is φ = 43054000.

The previous prime is 47477293. The next prime is 47477323. The reversal of 47477309 is 90377474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47477309 - 2⁴ = 47477293 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 (47477389) 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, 542 + ... + 9759.

It is an arithmetic number, because the mean of its divisors is an integer number (6490260).

Almost surely, 2^47477309 is an apocalyptic number.

It is an amenable number.

47477309 is a deficient number, since it is larger than the sum of its proper divisors (4444771).

47477309 is a wasteful number, since it uses less digits than its factorization.

47477309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10731.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 47477309 is about 6890.3780012420. The cubic root of 47477309 is about 362.1001447543.

The spelling of 47477309 in words is "forty-seven million, four hundred seventy-seven thousand, three hundred nine".