40403369 has 2 divisors, whose sum is σ = 40403370. Its totient is φ = 40403368.

The previous prime is 40403317. The next prime is 40403393. The reversal of 40403369 is 96330404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37210000 + 3193369 = 6100^2 + 1787^2 .

It is a cyclic number.

It is not a de Polignac number, because 40403369 - 2⁸ = 40403113 is a prime.

It is a super-2 number, since 2×40403369² = 3264864453100322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40403309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201684 + 20201685.

It is an arithmetic number, because the mean of its divisors is an integer number (20201685).

Almost surely, 2^40403369 is an apocalyptic number.

It is an amenable number.

40403369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40403369 is an equidigital number, since it uses as much as digits as its factorization.

40403369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 40403369 is about 6356.3644483305. The cubic root of 40403369 is about 343.1409320928.

The spelling of 40403369 in words is "forty million, four hundred three thousand, three hundred sixty-nine".