44878397 has 2 divisors, whose sum is σ = 44878398. Its totient is φ = 44878396.

The previous prime is 44878387. The next prime is 44878403. The reversal of 44878397 is 79387844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24393721 + 20484676 = 4939^2 + 4526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44878397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44878367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22439198 + 22439199.

It is an arithmetic number, because the mean of its divisors is an integer number (22439199).

Almost surely, 2^44878397 is an apocalyptic number.

It is an amenable number.

44878397 is a deficient number, since it is larger than the sum of its proper divisors (1).

44878397 is an equidigital number, since it uses as much as digits as its factorization.

44878397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 50.

The square root of 44878397 is about 6699.1340485170. The cubic root of 44878397 is about 355.3686496427.

The spelling of 44878397 in words is "forty-four million, eight hundred seventy-eight thousand, three hundred ninety-seven".