40299605 has 18 divisors (see below), whose sum is σ = 51680994. Its totient is φ = 30161536.

The previous prime is 40299601. The next prime is 40299617. The reversal of 40299605 is 50699204.

It can be written as a sum of positive squares in 3 ways, for example, as 13498276 + 26801329 = 3674^2 + 5177^2 .

It is not a de Polignac number, because 40299605 - 2² = 40299601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40299601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 241232 + ... + 241398.

Almost surely, 2^40299605 is an apocalyptic number.

It is an amenable number.

40299605 is a deficient number, since it is larger than the sum of its proper divisors (11381389).

40299605 is an equidigital number, since it uses as much as digits as its factorization.

40299605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 40299605 is about 6348.1969881219. The cubic root of 40299605 is about 342.8469285565.

It can be divided in two parts, 40299 and 605, that added together give a palindrome (40904).

The spelling of 40299605 in words is "forty million, two hundred ninety-nine thousand, six hundred five".