166079401 has 2 divisors, whose sum is σ = 166079402. Its totient is φ = 166079400.

The previous prime is 166079387. The next prime is 166079411. The reversal of 166079401 is 104970661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138674176 + 27405225 = 11776^2 + 5235^2 .

It is a cyclic number.

It is not a de Polignac number, because 166079401 - 2⁹ = 166078889 is a prime.

It is not a weakly prime, because it can be changed into another prime (166079411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83039700 + 83039701.

It is an arithmetic number, because the mean of its divisors is an integer number (83039701).

Almost surely, 2^166079401 is an apocalyptic number.

It is an amenable number.

166079401 is a deficient number, since it is larger than the sum of its proper divisors (1).

166079401 is an equidigital number, since it uses as much as digits as its factorization.

166079401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 166079401 is about 12887.1797147398. The cubic root of 166079401 is about 549.6740779759.

The spelling of 166079401 in words is "one hundred sixty-six million, seventy-nine thousand, four hundred one".