40889243 has 2 divisors, whose sum is σ = 40889244. Its totient is φ = 40889242.

The previous prime is 40889231. The next prime is 40889257. The reversal of 40889243 is 34298804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40889243 - 2⁴ = 40889227 is a prime.

It is a super-2 number, since 2×40889243² = 3343860386226098, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2484497 and since 40889243 and 2484497 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 40889197 and 40889206.

It is not a weakly prime, because it can be changed into another prime (40889263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20444621 + 20444622.

It is an arithmetic number, because the mean of its divisors is an integer number (20444622).

Almost surely, 2^40889243 is an apocalyptic number.

40889243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40889243 is an equidigital number, since it uses as much as digits as its factorization.

40889243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 40889243 is about 6394.4697200002. The cubic root of 40889243 is about 344.5109446775.

It can be divided in two parts, 4088 and 9243, that added together give a palindrome (13331).

The spelling of 40889243 in words is "forty million, eight hundred eighty-nine thousand, two hundred forty-three".