40731269 has 12 divisors (see below), whose sum is σ = 45523404. Its totient is φ = 36312192.

The previous prime is 40731239. The next prime is 40731287. The reversal of 40731269 is 96213704.

It can be written as a sum of positive squares in 2 ways, for example, as 13032100 + 27699169 = 3610^2 + 5263^2 .

It is not a de Polignac number, because 40731269 - 2¹² = 40727173 is a prime.

It is a super-2 number, since 2×40731269² = 3318072548700722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40731239) 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 in 11 ways as a sum of consecutive naturals, for example, 2819 + ... + 9455.

It is an arithmetic number, because the mean of its divisors is an integer number (3793617).

Almost surely, 2^40731269 is an apocalyptic number.

It is an amenable number.

40731269 is a deficient number, since it is larger than the sum of its proper divisors (4792135).

40731269 is a wasteful number, since it uses less digits than its factorization.

40731269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 40731269 is about 6382.1053736208. The cubic root of 40731269 is about 344.0667038712.

The spelling of 40731269 in words is "forty million, seven hundred thirty-one thousand, two hundred sixty-nine".