40319291 has 8 divisors (see below), whose sum is σ = 42747264. Its totient is φ = 37897600.

The previous prime is 40319281. The next prime is 40319303. The reversal of 40319291 is 19291304.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40319291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40319261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21206 + ... + 23028.

It is an arithmetic number, because the mean of its divisors is an integer number (5343408).

Almost surely, 2^40319291 is an apocalyptic number.

40319291 is a deficient number, since it is larger than the sum of its proper divisors (2427973).

40319291 is a wasteful number, since it uses less digits than its factorization.

40319291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 40319291 is about 6349.7473178072. The cubic root of 40319291 is about 342.9027453645.

The spelling of 40319291 in words is "forty million, three hundred nineteen thousand, two hundred ninety-one".