40867961 has 2 divisors, whose sum is σ = 40867962. Its totient is φ = 40867960.

The previous prime is 40867927. The next prime is 40868029. The reversal of 40867961 is 16976804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 469225 = 6356^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 40867961 - 2²² = 36673657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40867661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20433980 + 20433981.

It is an arithmetic number, because the mean of its divisors is an integer number (20433981).

Almost surely, 2^40867961 is an apocalyptic number.

It is an amenable number.

40867961 is a deficient number, since it is larger than the sum of its proper divisors (1).

40867961 is an equidigital number, since it uses as much as digits as its factorization.

40867961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40867961 is about 6392.8054092081. The cubic root of 40867961 is about 344.4511640459.

The spelling of 40867961 in words is "forty million, eight hundred sixty-seven thousand, nine hundred sixty-one".