41978789 has 2 divisors, whose sum is σ = 41978790. Its totient is φ = 41978788.

The previous prime is 41978779. The next prime is 41978801. The reversal of 41978789 is 98787914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22486564 + 19492225 = 4742^2 + 4415^2 .

It is a cyclic number.

It is not a de Polignac number, because 41978789 - 2²⁴ = 25201573 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41978789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41978779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20989394 + 20989395.

It is an arithmetic number, because the mean of its divisors is an integer number (20989395).

Almost surely, 2^41978789 is an apocalyptic number.

It is an amenable number.

41978789 is a deficient number, since it is larger than the sum of its proper divisors (1).

41978789 is an equidigital number, since it uses as much as digits as its factorization.

41978789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 53.

The square root of 41978789 is about 6479.1040275643. The cubic root of 41978789 is about 347.5441387613.

The spelling of 41978789 in words is "forty-one million, nine hundred seventy-eight thousand, seven hundred eighty-nine".