166379407 has 2 divisors, whose sum is σ = 166379408. Its totient is φ = 166379406.

The previous prime is 166379383. The next prime is 166379419. The reversal of 166379407 is 704973661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166379407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166379497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83189703 + 83189704.

It is an arithmetic number, because the mean of its divisors is an integer number (83189704).

Almost surely, 2^166379407 is an apocalyptic number.

166379407 is a deficient number, since it is larger than the sum of its proper divisors (1).

166379407 is an equidigital number, since it uses as much as digits as its factorization.

166379407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 166379407 is about 12898.8141703026. The cubic root of 166379407 is about 550.0048561555.

The spelling of 166379407 in words is "one hundred sixty-six million, three hundred seventy-nine thousand, four hundred seven".