1384440923 has 2 divisors, whose sum is σ = 1384440924. Its totient is φ = 1384440922.

The previous prime is 1384440901. The next prime is 1384440979. The reversal of 1384440923 is 3290444831.

It is a weak prime.

It is an emirp because it is prime and its reverse (3290444831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1384440923 - 2⁸ = 1384440667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1384440023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692220461 + 692220462.

It is an arithmetic number, because the mean of its divisors is an integer number (692220462).

Almost surely, 2^1384440923 is an apocalyptic number.

1384440923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1384440923 is an equidigital number, since it uses as much as digits as its factorization.

1384440923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1384440923 is about 37208.0760453964. The cubic root of 1384440923 is about 1114.5292637769.

The spelling of 1384440923 in words is "one billion, three hundred eighty-four million, four hundred forty thousand, nine hundred twenty-three".