40229291 has 2 divisors, whose sum is σ = 40229292. Its totient is φ = 40229290.

The previous prime is 40229263. The next prime is 40229297. The reversal of 40229291 is 19292204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40229291 is a prime.

It is a super-3 number, since 3×40229291³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40229297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20114645 + 20114646.

It is an arithmetic number, because the mean of its divisors is an integer number (20114646).

Almost surely, 2^40229291 is an apocalyptic number.

40229291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40229291 is an equidigital number, since it uses as much as digits as its factorization.

40229291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40229291 is about 6342.6564623981. The cubic root of 40229291 is about 342.6474148310.

The spelling of 40229291 in words is "forty million, two hundred twenty-nine thousand, two hundred ninety-one".