47697109 has 2 divisors, whose sum is σ = 47697110. Its totient is φ = 47697108.

The previous prime is 47697073. The next prime is 47697113. The reversal of 47697109 is 90179674.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 19554084 = 5305^2 + 4422^2 .

It is a cyclic number.

It is not a de Polignac number, because 47697109 - 2¹⁷ = 47566037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47697409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23848554 + 23848555.

It is an arithmetic number, because the mean of its divisors is an integer number (23848555).

Almost surely, 2^47697109 is an apocalyptic number.

It is an amenable number.

47697109 is a deficient number, since it is larger than the sum of its proper divisors (1).

47697109 is an equidigital number, since it uses as much as digits as its factorization.

47697109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 47697109 is about 6906.3093617358. The cubic root of 47697109 is about 362.6580751724.

The spelling of 47697109 in words is "forty-seven million, six hundred ninety-seven thousand, one hundred nine".