3779921 has 2 divisors, whose sum is σ = 3779922. Its totient is φ = 3779920.

The previous prime is 3779891. The next prime is 3779929. The reversal of 3779921 is 1299773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3568321 + 211600 = 1889^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 3779921 - 2⁶ = 3779857 is a prime.

It is not a weakly prime, because it can be changed into another prime (3779929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1889960 + 1889961.

It is an arithmetic number, because the mean of its divisors is an integer number (1889961).

Almost surely, 2^3779921 is an apocalyptic number.

It is an amenable number.

3779921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3779921 is an equidigital number, since it uses as much as digits as its factorization.

3779921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 38.

The square root of 3779921 is about 1944.2018928085. The cubic root of 3779921 is about 155.7737378442.

The spelling of 3779921 in words is "three million, seven hundred seventy-nine thousand, nine hundred twenty-one".