40156249 has 8 divisors (see below), whose sum is σ = 46578368. Its totient is φ = 33905520.

The previous prime is 40156247. The next prime is 40156307. The reversal of 40156249 is 94265104.

40156249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40156249 - 2¹ = 40156247 is a prime.

It is a super-2 number, since 2×40156249² = 3225048667500002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40156249.

It is not an unprimeable number, because it can be changed into a prime (40156247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42342 + ... + 43279.

It is an arithmetic number, because the mean of its divisors is an integer number (5822296).

Almost surely, 2^40156249 is an apocalyptic number.

It is an amenable number.

40156249 is a deficient number, since it is larger than the sum of its proper divisors (6422119).

40156249 is an equidigital number, since it uses as much as digits as its factorization.

40156249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85695.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 40156249 is about 6336.8958489153. The cubic root of 40156249 is about 342.4399141581.

The spelling of 40156249 in words is "forty million, one hundred fifty-six thousand, two hundred forty-nine".