380989747 has 2 divisors, whose sum is σ = 380989748. Its totient is φ = 380989746.

The previous prime is 380989681. The next prime is 380989781. The reversal of 380989747 is 747989083.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 380989747 - 2¹¹ = 380987699 is a prime.

It is not a weakly prime, because it can be changed into another prime (380983747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190494873 + 190494874.

It is an arithmetic number, because the mean of its divisors is an integer number (190494874).

Almost surely, 2^380989747 is an apocalyptic number.

380989747 is a deficient number, since it is larger than the sum of its proper divisors (1).

380989747 is an equidigital number, since it uses as much as digits as its factorization.

380989747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 380989747 is about 19518.9586556250. The cubic root of 380989747 is about 724.9439493727.

The spelling of 380989747 in words is "three hundred eighty million, nine hundred eighty-nine thousand, seven hundred forty-seven".