44139253 has 2 divisors, whose sum is σ = 44139254. Its totient is φ = 44139252.

The previous prime is 44139241. The next prime is 44139289. The reversal of 44139253 is 35293144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43850884 + 288369 = 6622^2 + 537^2 .

It is a cyclic number.

It is not a de Polignac number, because 44139253 - 2⁹ = 44138741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44139233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22069626 + 22069627.

It is an arithmetic number, because the mean of its divisors is an integer number (22069627).

Almost surely, 2^44139253 is an apocalyptic number.

It is an amenable number.

44139253 is a deficient number, since it is larger than the sum of its proper divisors (1).

44139253 is an equidigital number, since it uses as much as digits as its factorization.

44139253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 44139253 is about 6643.7378786343. The cubic root of 44139253 is about 353.4068743527.

The spelling of 44139253 in words is "forty-four million, one hundred thirty-nine thousand, two hundred fifty-three".