2878397 has 2 divisors, whose sum is σ = 2878398. Its totient is φ = 2878396.

The previous prime is 2878391. The next prime is 2878409. The reversal of 2878397 is 7938782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2540836 + 337561 = 1594^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878397 - 2⁶ = 2878333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2878391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439198 + 1439199.

It is an arithmetic number, because the mean of its divisors is an integer number (1439199).

2^2878397 is an apocalyptic number.

It is an amenable number.

2878397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878397 is an equidigital number, since it uses as much as digits as its factorization.

2878397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 2878397 is about 1696.5839207065. The cubic root of 2878397 is about 142.2493305215.

The spelling of 2878397 in words is "two million, eight hundred seventy-eight thousand, three hundred ninety-seven".