40159549 has 4 divisors (see below), whose sum is σ = 41093536. Its totient is φ = 39225564.

The previous prime is 40159547. The next prime is 40159579. The reversal of 40159549 is 94595104.

40159549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40159549 - 2¹ = 40159547 is a prime.

It is a super-2 number, since 2×40159549² = 3225578751766802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40159543) 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 3 ways as a sum of consecutive naturals, for example, 466929 + ... + 467014.

It is an arithmetic number, because the mean of its divisors is an integer number (10273384).

Almost surely, 2^40159549 is an apocalyptic number.

It is an amenable number.

40159549 is a deficient number, since it is larger than the sum of its proper divisors (933987).

40159549 is an equidigital number, since it uses as much as digits as its factorization.

40159549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933986.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 40159549 is about 6337.1562234176. The cubic root of 40159549 is about 342.4492943566.

The spelling of 40159549 in words is "forty million, one hundred fifty-nine thousand, five hundred forty-nine".