40236669 has 24 divisors (see below), whose sum is σ = 65755872. Its totient is φ = 24384240.

The previous prime is 40236631. The next prime is 40236673. The reversal of 40236669 is 96663204.

It is not a de Polignac number, because 40236669 - 2¹² = 40232573 is a prime.

It is a super-2 number, since 2×40236669² = 3237979064431122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40236619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4854 + ... + 10199.

It is an arithmetic number, because the mean of its divisors is an integer number (2739828).

Almost surely, 2^40236669 is an apocalyptic number.

It is an amenable number.

40236669 is a deficient number, since it is larger than the sum of its proper divisors (25519203).

40236669 is a wasteful number, since it uses less digits than its factorization.

40236669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079 (or 15067 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 40236669 is about 6343.2380532343. The cubic root of 40236669 is about 342.6683605817.

The spelling of 40236669 in words is "forty million, two hundred thirty-six thousand, six hundred sixty-nine".