40819291 has 2 divisors, whose sum is σ = 40819292. Its totient is φ = 40819290.

The previous prime is 40819283. The next prime is 40819333. The reversal of 40819291 is 19291804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40819291 - 2³ = 40819283 is a prime.

It is equal to p_2480497 and since 40819291 and 2480497 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40819241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20409645 + 20409646.

It is an arithmetic number, because the mean of its divisors is an integer number (20409646).

Almost surely, 2^40819291 is an apocalyptic number.

40819291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40819291 is an equidigital number, since it uses as much as digits as its factorization.

40819291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 40819291 is about 6388.9976522143. The cubic root of 40819291 is about 344.3143731293.

The spelling of 40819291 in words is "forty million, eight hundred nineteen thousand, two hundred ninety-one".