147691417 has 2 divisors, whose sum is σ = 147691418. Its totient is φ = 147691416.

The previous prime is 147691387. The next prime is 147691433. The reversal of 147691417 is 714196741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134119561 + 13571856 = 11581^2 + 3684^2 .

It is a cyclic number.

It is not a de Polignac number, because 147691417 - 2¹⁵ = 147658649 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147691417.

It is not a weakly prime, because it can be changed into another prime (147691447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73845708 + 73845709.

It is an arithmetic number, because the mean of its divisors is an integer number (73845709).

Almost surely, 2^147691417 is an apocalyptic number.

It is an amenable number.

147691417 is a deficient number, since it is larger than the sum of its proper divisors (1).

147691417 is an equidigital number, since it uses as much as digits as its factorization.

147691417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 147691417 is about 12152.8357596077. The cubic root of 147691417 is about 528.5893626076.

The spelling of 147691417 in words is "one hundred forty-seven million, six hundred ninety-one thousand, four hundred seventeen".