2380921 has 2 divisors, whose sum is σ = 2380922. Its totient is φ = 2380920.

The previous prime is 2380907. The next prime is 2380951. The reversal of 2380921 is 1290832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1597696 + 783225 = 1264^2 + 885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2380921 - 2⁷ = 2380793 is a prime.

2380921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2380951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190460 + 1190461.

It is an arithmetic number, because the mean of its divisors is an integer number (1190461).

2^2380921 is an apocalyptic number.

It is an amenable number.

2380921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2380921 is an equidigital number, since it uses as much as digits as its factorization.

2380921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2380921 is about 1543.0233309967. The cubic root of 2380921 is about 133.5308648541.

The spelling of 2380921 in words is "two million, three hundred eighty thousand, nine hundred twenty-one".