380890897 has 8 divisors (see below), whose sum is σ = 388993320. Its totient is φ = 372873600.

The previous prime is 380890849. The next prime is 380890919. The reversal of 380890897 is 798098083.

It can be written as a sum of positive squares in 4 ways, for example, as 22886656 + 358004241 = 4784^2 + 18921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380890897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380890847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12198 + ... + 30175.

It is an arithmetic number, because the mean of its divisors is an integer number (48624165).

Almost surely, 2^380890897 is an apocalyptic number.

It is an amenable number.

380890897 is a deficient number, since it is larger than the sum of its proper divisors (8102423).

380890897 is a wasteful number, since it uses less digits than its factorization.

380890897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42563.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 380890897 is about 19516.4263378314. The cubic root of 380890897 is about 724.8812469785.

The spelling of 380890897 in words is "three hundred eighty million, eight hundred ninety thousand, eight hundred ninety-seven".