392991143 has 2 divisors, whose sum is σ = 392991144. Its totient is φ = 392991142.

The previous prime is 392991119. The next prime is 392991149. The reversal of 392991143 is 341199293.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 392991143 - 2¹² = 392987047 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 392991143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (392991149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196495571 + 196495572.

It is an arithmetic number, because the mean of its divisors is an integer number (196495572).

Almost surely, 2^392991143 is an apocalyptic number.

392991143 is a deficient number, since it is larger than the sum of its proper divisors (1).

392991143 is an equidigital number, since it uses as much as digits as its factorization.

392991143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 41.

The square root of 392991143 is about 19824.0042120657. The cubic root of 392991143 is about 732.4774417915.

The spelling of 392991143 in words is "three hundred ninety-two million, nine hundred ninety-one thousand, one hundred forty-three".