380753449 has 2 divisors, whose sum is σ = 380753450. Its totient is φ = 380753448.

The previous prime is 380753447. The next prime is 380753479. The reversal of 380753449 is 944357083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380523049 + 230400 = 19507^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 380753449 - 2¹ = 380753447 is a prime.

Together with 380753447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (380753447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190376724 + 190376725.

It is an arithmetic number, because the mean of its divisors is an integer number (190376725).

Almost surely, 2^380753449 is an apocalyptic number.

It is an amenable number.

380753449 is a deficient number, since it is larger than the sum of its proper divisors (1).

380753449 is an equidigital number, since it uses as much as digits as its factorization.

380753449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 380753449 is about 19512.9046786992. The cubic root of 380753449 is about 724.7940431227.

The spelling of 380753449 in words is "three hundred eighty million, seven hundred fifty-three thousand, four hundred forty-nine".