390449 has 2 divisors, whose sum is σ = 390450. Its totient is φ = 390448.

The previous prime is 390437. The next prime is 390463. The reversal of 390449 is 944093.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255025 + 135424 = 505^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 390449 - 2⁴ = 390433 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390449.

It is not a weakly prime, because it can be changed into another prime (390419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195224 + 195225.

It is an arithmetic number, because the mean of its divisors is an integer number (195225).

2³⁹⁰⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

390449 is a deficient number, since it is larger than the sum of its proper divisors (1).

390449 is an equidigital number, since it uses as much as digits as its factorization.

390449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 390449 is about 624.8591841367. The cubic root of 390449 is about 73.0894630941.

The spelling of 390449 in words is "three hundred ninety thousand, four hundred forty-nine".