40981529 has 2 divisors, whose sum is σ = 40981530. Its totient is φ = 40981528.

The previous prime is 40981511. The next prime is 40981531. The reversal of 40981529 is 92518904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30913600 + 10067929 = 5560^2 + 3173^2 .

It is a cyclic number.

It is not a de Polignac number, because 40981529 - 2¹⁶ = 40915993 is a prime.

Together with 40981531, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40981492 and 40981501.

It is not a weakly prime, because it can be changed into another prime (40981229) 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, 20490764 + 20490765.

It is an arithmetic number, because the mean of its divisors is an integer number (20490765).

Almost surely, 2^40981529 is an apocalyptic number.

It is an amenable number.

40981529 is a deficient number, since it is larger than the sum of its proper divisors (1).

40981529 is an equidigital number, since it uses as much as digits as its factorization.

40981529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 40981529 is about 6401.6817321701. The cubic root of 40981529 is about 344.7699341296.

The spelling of 40981529 in words is "forty million, nine hundred eighty-one thousand, five hundred twenty-nine".