166347479 has 2 divisors, whose sum is σ = 166347480. Its totient is φ = 166347478.

The previous prime is 166347469. The next prime is 166347529. The reversal of 166347479 is 974743661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166347479 - 2⁴ = 166347463 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 (166347409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83173739 + 83173740.

It is an arithmetic number, because the mean of its divisors is an integer number (83173740).

Almost surely, 2^166347479 is an apocalyptic number.

166347479 is a deficient number, since it is larger than the sum of its proper divisors (1).

166347479 is an equidigital number, since it uses as much as digits as its factorization.

166347479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 166347479 is about 12897.5764777729. The cubic root of 166347479 is about 549.9696721569.

The spelling of 166347479 in words is "one hundred sixty-six million, three hundred forty-seven thousand, four hundred seventy-nine".