44878913 has 2 divisors, whose sum is σ = 44878914. Its totient is φ = 44878912.

The previous prime is 44878909. The next prime is 44878919. The reversal of 44878913 is 31987844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36881329 + 7997584 = 6073^2 + 2828^2 .

It is a cyclic number.

It is not a de Polignac number, because 44878913 - 2² = 44878909 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44878919) 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, 22439456 + 22439457.

It is an arithmetic number, because the mean of its divisors is an integer number (22439457).

Almost surely, 2^44878913 is an apocalyptic number.

It is an amenable number.

44878913 is a deficient number, since it is larger than the sum of its proper divisors (1).

44878913 is an equidigital number, since it uses as much as digits as its factorization.

44878913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 44878913 is about 6699.1725608466. The cubic root of 44878913 is about 355.3700116159.

The spelling of 44878913 in words is "forty-four million, eight hundred seventy-eight thousand, nine hundred thirteen".