40144529 has 2 divisors, whose sum is σ = 40144530. Its totient is φ = 40144528.

The previous prime is 40144501. The next prime is 40144537. The reversal of 40144529 is 92544104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31618129 + 8526400 = 5623^2 + 2920^2 .

It is a cyclic number.

It is not a de Polignac number, because 40144529 - 2¹⁶ = 40078993 is a prime.

It is a super-2 number, since 2×40144529² = 3223166417263682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40144229) 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, 20072264 + 20072265.

It is an arithmetic number, because the mean of its divisors is an integer number (20072265).

Almost surely, 2^40144529 is an apocalyptic number.

It is an amenable number.

40144529 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144529 is an equidigital number, since it uses as much as digits as its factorization.

40144529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 40144529 is about 6335.9710384439. The cubic root of 40144529 is about 342.4065960868.

The spelling of 40144529 in words is "forty million, one hundred forty-four thousand, five hundred twenty-nine".