44981389 has 2 divisors, whose sum is σ = 44981390. Its totient is φ = 44981388.

The previous prime is 44981383. The next prime is 44981429. The reversal of 44981389 is 98318944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43007364 + 1974025 = 6558^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 44981389 - 2¹³ = 44973197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44981383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22490694 + 22490695.

It is an arithmetic number, because the mean of its divisors is an integer number (22490695).

Almost surely, 2^44981389 is an apocalyptic number.

It is an amenable number.

44981389 is a deficient number, since it is larger than the sum of its proper divisors (1).

44981389 is an equidigital number, since it uses as much as digits as its factorization.

44981389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 44981389 is about 6706.8166070051. The cubic root of 44981389 is about 355.6402886199.

The spelling of 44981389 in words is "forty-four million, nine hundred eighty-one thousand, three hundred eighty-nine".