40160291 has 4 divisors (see below), whose sum is σ = 40305552. Its totient is φ = 40015032.

The previous prime is 40160249. The next prime is 40160299. The reversal of 40160291 is 19206104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40160291 - 2¹⁰ = 40159267 is a prime.

It is a super-2 number, since 2×40160291² = 3225697946409362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40160299) 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, 72215 + ... + 72768.

It is an arithmetic number, because the mean of its divisors is an integer number (10076388).

Almost surely, 2^40160291 is an apocalyptic number.

40160291 is a deficient number, since it is larger than the sum of its proper divisors (145261).

40160291 is a wasteful number, since it uses less digits than its factorization.

40160291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145260.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 40160291 is about 6337.2147667568. The cubic root of 40160291 is about 342.4514034093.

Adding to 40160291 its reverse (19206104), we get a palindrome (59366395).

The spelling of 40160291 in words is "forty million, one hundred sixty thousand, two hundred ninety-one".