390487 has 2 divisors, whose sum is σ = 390488. Its totient is φ = 390486.

The previous prime is 390479. The next prime is 390491. The reversal of 390487 is 784093.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390487 - 2³ = 390479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195243 + 195244.

It is an arithmetic number, because the mean of its divisors is an integer number (195244).

2³⁹⁰⁴⁸⁷ is an apocalyptic number.

390487 is a deficient number, since it is larger than the sum of its proper divisors (1).

390487 is an equidigital number, since it uses as much as digits as its factorization.

390487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 390487 is about 624.8895902477. The cubic root of 390487 is about 73.0918341332.

The spelling of 390487 in words is "three hundred ninety thousand, four hundred eighty-seven".