392190389 has 2 divisors, whose sum is σ = 392190390. Its totient is φ = 392190388.

The previous prime is 392190377. The next prime is 392190427. The reversal of 392190389 is 983091293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371332900 + 20857489 = 19270^2 + 4567^2 .

It is a cyclic number.

It is not a de Polignac number, because 392190389 - 2¹² = 392186293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (392199389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196095194 + 196095195.

It is an arithmetic number, because the mean of its divisors is an integer number (196095195).

Almost surely, 2^392190389 is an apocalyptic number.

It is an amenable number.

392190389 is a deficient number, since it is larger than the sum of its proper divisors (1).

392190389 is an equidigital number, since it uses as much as digits as its factorization.

392190389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 392190389 is about 19803.7973378845. The cubic root of 392190389 is about 731.9796077859.

The spelling of 392190389 in words is "three hundred ninety-two million, one hundred ninety thousand, three hundred eighty-nine".