390216143 has 2 divisors, whose sum is σ = 390216144. Its totient is φ = 390216142.

The previous prime is 390216133. The next prime is 390216149. The reversal of 390216143 is 341612093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390216143 - 2¹⁸ = 389953999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390216149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195108071 + 195108072.

It is an arithmetic number, because the mean of its divisors is an integer number (195108072).

Almost surely, 2^390216143 is an apocalyptic number.

390216143 is a deficient number, since it is larger than the sum of its proper divisors (1).

390216143 is an equidigital number, since it uses as much as digits as its factorization.

390216143 is an evil number, because the sum of its binary digits is even.

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

The square root of 390216143 is about 19753.8893132466. The cubic root of 390216143 is about 730.7493044275.

The spelling of 390216143 in words is "three hundred ninety million, two hundred sixteen thousand, one hundred forty-three".