2978401 has 2 divisors, whose sum is σ = 2978402. Its totient is φ = 2978400.

The previous prime is 2978399. The next prime is 2978407. The reversal of 2978401 is 1048792.

2978401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2027776 + 950625 = 1424^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2978401 - 2¹ = 2978399 is a prime.

Together with 2978399, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (2978407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489200 + 1489201.

It is an arithmetic number, because the mean of its divisors is an integer number (1489201).

2^2978401 is an apocalyptic number.

It is an amenable number.

2978401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978401 is an equidigital number, since it uses as much as digits as its factorization.

2978401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2978401 is about 1725.8044501044. The cubic root of 2978401 is about 143.8779991615.

The spelling of 2978401 in words is "two million, nine hundred seventy-eight thousand, four hundred one".