40961189 has 2 divisors, whose sum is σ = 40961190. Its totient is φ = 40961188.

The previous prime is 40961161. The next prime is 40961201. The reversal of 40961189 is 98116904.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40538689 + 422500 = 6367^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 40961189 - 2¹² = 40957093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40961149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20480594 + 20480595.

It is an arithmetic number, because the mean of its divisors is an integer number (20480595).

Almost surely, 2^40961189 is an apocalyptic number.

It is an amenable number.

40961189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40961189 is an equidigital number, since it uses as much as digits as its factorization.

40961189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 40961189 is about 6400.0928899509. The cubic root of 40961189 is about 344.7128858192.

The spelling of 40961189 in words is "forty million, nine hundred sixty-one thousand, one hundred eighty-nine".