47279377 has 8 divisors (see below), whose sum is σ = 48643496. Its totient is φ = 45919872.

The previous prime is 47279357. The next prime is 47279383. The reversal of 47279377 is 77397274.

It is a Cunningham number, because it is equal to 6876²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 35712576 + 11566801 = 5976^2 + 3401^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47279377 - 2⁷ = 47279249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47279357) 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, 37603 + ... + 38839.

It is an arithmetic number, because the mean of its divisors is an integer number (6080437).

Almost surely, 2^47279377 is an apocalyptic number.

It is an amenable number.

47279377 is a deficient number, since it is larger than the sum of its proper divisors (1364119).

47279377 is a wasteful number, since it uses less digits than its factorization.

47279377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its digits is 518616, while the sum is 46.

The square root of 47279377 is about 6876.0000727167. Note that the first 4 decimals coincide. The cubic root of 47279377 is about 361.5962476483.

The spelling of 47279377 in words is "forty-seven million, two hundred seventy-nine thousand, three hundred seventy-seven".