47819957 has 2 divisors, whose sum is σ = 47819958. Its totient is φ = 47819956.

The previous prime is 47819953. The next prime is 47819969. The reversal of 47819957 is 75991874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46158436 + 1661521 = 6794^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 47819957 - 2² = 47819953 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47819953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23909978 + 23909979.

It is an arithmetic number, because the mean of its divisors is an integer number (23909979).

Almost surely, 2^47819957 is an apocalyptic number.

It is an amenable number.

47819957 is a deficient number, since it is larger than the sum of its proper divisors (1).

47819957 is an equidigital number, since it uses as much as digits as its factorization.

47819957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 50.

The square root of 47819957 is about 6915.1975387548. The cubic root of 47819957 is about 362.9691605874.

The spelling of 47819957 in words is "forty-seven million, eight hundred nineteen thousand, nine hundred fifty-seven".