390407 has 2 divisors, whose sum is σ = 390408. Its totient is φ = 390406.

The previous prime is 390391. The next prime is 390413. The reversal of 390407 is 704093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390407 - 2⁴ = 390391 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390407.

It is not a weakly prime, because it can be changed into another prime (390437) 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, 195203 + 195204.

It is an arithmetic number, because the mean of its divisors is an integer number (195204).

2³⁹⁰⁴⁰⁷ is an apocalyptic number.

390407 is a deficient number, since it is larger than the sum of its proper divisors (1).

390407 is an equidigital number, since it uses as much as digits as its factorization.

390407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 390407 is about 624.8255756609. The cubic root of 390407 is about 73.0868422930.

It can be divided in two parts, 390 and 407, that added together give a palindrome (797).

The spelling of 390407 in words is "three hundred ninety thousand, four hundred seven".