393487 has 2 divisors, whose sum is σ = 393488. Its totient is φ = 393486.

The previous prime is 393479. The next prime is 393517. The reversal of 393487 is 784393.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 393487 - 2³ = 393479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196743 + 196744.

It is an arithmetic number, because the mean of its divisors is an integer number (196744).

2³⁹³⁴⁸⁷ is an apocalyptic number.

393487 is a deficient number, since it is larger than the sum of its proper divisors (1).

393487 is an equidigital number, since it uses as much as digits as its factorization.

393487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 393487 is about 627.2854214789. The cubic root of 393487 is about 73.2785380382.

The spelling of 393487 in words is "three hundred ninety-three thousand, four hundred eighty-seven".