40957493 has 2 divisors, whose sum is σ = 40957494. Its totient is φ = 40957492.

The previous prime is 40957489. The next prime is 40957517. The reversal of 40957493 is 39475904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35307364 + 5650129 = 5942^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 40957493 - 2² = 40957489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40957493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40957093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20478746 + 20478747.

It is an arithmetic number, because the mean of its divisors is an integer number (20478747).

Almost surely, 2^40957493 is an apocalyptic number.

It is an amenable number.

40957493 is a deficient number, since it is larger than the sum of its proper divisors (1).

40957493 is an equidigital number, since it uses as much as digits as its factorization.

40957493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 40957493 is about 6399.8041376280. The cubic root of 40957493 is about 344.7025174911.

The spelling of 40957493 in words is "forty million, nine hundred fifty-seven thousand, four hundred ninety-three".