47421197 has 2 divisors, whose sum is σ = 47421198. Its totient is φ = 47421196.

The previous prime is 47421181. The next prime is 47421221. The reversal of 47421197 is 79112474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38576521 + 8844676 = 6211^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 47421197 - 2⁴ = 47421181 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 (47421107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23710598 + 23710599.

It is an arithmetic number, because the mean of its divisors is an integer number (23710599).

Almost surely, 2^47421197 is an apocalyptic number.

It is an amenable number.

47421197 is a deficient number, since it is larger than the sum of its proper divisors (1).

47421197 is an equidigital number, since it uses as much as digits as its factorization.

47421197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 47421197 is about 6886.3050324539. The cubic root of 47421197 is about 361.9574367710.

The spelling of 47421197 in words is "forty-seven million, four hundred twenty-one thousand, one hundred ninety-seven".