47909377 has 2 divisors, whose sum is σ = 47909378. Its totient is φ = 47909376.

The previous prime is 47909369. The next prime is 47909399. The reversal of 47909377 is 77390974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 147456 = 6911^2 + 384^2 .

It is a cyclic number.

It is not a de Polignac number, because 47909377 - 2³ = 47909369 is a prime.

It is not a weakly prime, because it can be changed into another prime (47909327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23954688 + 23954689.

It is an arithmetic number, because the mean of its divisors is an integer number (23954689).

Almost surely, 2^47909377 is an apocalyptic number.

It is an amenable number.

47909377 is a deficient number, since it is larger than the sum of its proper divisors (1).

47909377 is an equidigital number, since it uses as much as digits as its factorization.

47909377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 47909377 is about 6921.6599887599. The cubic root of 47909377 is about 363.1952620924.

The spelling of 47909377 in words is "forty-seven million, nine hundred nine thousand, three hundred seventy-seven".