40165436 has 12 divisors (see below), whose sum is σ = 70464240. Its totient is φ = 20032800.

The previous prime is 40165409. The next prime is 40165439. The reversal of 40165436 is 63456104.

It is a happy number.

It is a super-2 number, since 2×40165436² = 3226524498140192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40165399 and 40165408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40165439) 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 3 ways as a sum of consecutive naturals, for example, 10640 + ... + 13911.

It is an arithmetic number, because the mean of its divisors is an integer number (5872020).

Almost surely, 2^40165436 is an apocalyptic number.

It is an amenable number.

40165436 is a deficient number, since it is larger than the sum of its proper divisors (30298804).

40165436 is a wasteful number, since it uses less digits than its factorization.

40165436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24964 (or 24962 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40165436 is about 6337.6206891861. The cubic root of 40165436 is about 342.4660267864.

The spelling of 40165436 in words is "forty million, one hundred sixty-five thousand, four hundred thirty-six".