40888643 has 2 divisors, whose sum is σ = 40888644. Its totient is φ = 40888642.

The previous prime is 40888613. The next prime is 40888649. The reversal of 40888643 is 34688804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40888643 - 2¹⁸ = 40626499 is a prime.

It is a super-2 number, since 2×40888643² = 3343762252762898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40888643.

It is not a weakly prime, because it can be changed into another prime (40888649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20444321 + 20444322.

It is an arithmetic number, because the mean of its divisors is an integer number (20444322).

Almost surely, 2^40888643 is an apocalyptic number.

40888643 is a deficient number, since it is larger than the sum of its proper divisors (1).

40888643 is an equidigital number, since it uses as much as digits as its factorization.

40888643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 40888643 is about 6394.4228042881. The cubic root of 40888643 is about 344.5092595760.

The spelling of 40888643 in words is "forty million, eight hundred eighty-eight thousand, six hundred forty-three".