3980401 has 2 divisors, whose sum is σ = 3980402. Its totient is φ = 3980400.

The previous prime is 3980399. The next prime is 3980407. The reversal of 3980401 is 1040893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3591025 + 389376 = 1895^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 3980401 - 2¹ = 3980399 is a prime.

Together with 3980399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3980407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990200 + 1990201.

It is an arithmetic number, because the mean of its divisors is an integer number (1990201).

Almost surely, 2^3980401 is an apocalyptic number.

It is an amenable number.

3980401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980401 is an equidigital number, since it uses as much as digits as its factorization.

3980401 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3980401 is about 1995.0942333634. The cubic root of 3980401 is about 158.4804183235.

The spelling of 3980401 in words is "three million, nine hundred eighty thousand, four hundred one".