320004149 has 2 divisors, whose sum is σ = 320004150. Its totient is φ = 320004148.

The previous prime is 320004121. The next prime is 320004163. The reversal of 320004149 is 941400023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315772900 + 4231249 = 17770^2 + 2057^2 .

It is a cyclic number.

It is not a de Polignac number, because 320004149 - 2¹⁶ = 319938613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320004169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160002074 + 160002075.

It is an arithmetic number, because the mean of its divisors is an integer number (160002075).

Almost surely, 2^320004149 is an apocalyptic number.

It is an amenable number.

320004149 is a deficient number, since it is larger than the sum of its proper divisors (1).

320004149 is an equidigital number, since it uses as much as digits as its factorization.

320004149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 320004149 is about 17888.6597876979. The cubic root of 320004149 is about 683.9933347788.

The spelling of 320004149 in words is "three hundred twenty million, four thousand, one hundred forty-nine".