40954681 has 2 divisors, whose sum is σ = 40954682. Its totient is φ = 40954680.

The previous prime is 40954603. The next prime is 40954691. The reversal of 40954681 is 18645904.

It is a happy number.

40954681 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27994681 + 12960000 = 5291^2 + 3600^2 .

It is a cyclic number.

It is not a de Polignac number, because 40954681 - 2⁷ = 40954553 is a prime.

It is a super-2 number, since 2×40954681² = 3354571791623522, 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 40954681.

It is not a weakly prime, because it can be changed into another prime (40954691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20477340 + 20477341.

It is an arithmetic number, because the mean of its divisors is an integer number (20477341).

Almost surely, 2^40954681 is an apocalyptic number.

It is an amenable number.

40954681 is a deficient number, since it is larger than the sum of its proper divisors (1).

40954681 is an equidigital number, since it uses as much as digits as its factorization.

40954681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 40954681 is about 6399.5844396336. The cubic root of 40954681 is about 344.6946286158.

The spelling of 40954681 in words is "forty million, nine hundred fifty-four thousand, six hundred eighty-one".