940004257 has 2 divisors, whose sum is σ = 940004258. Its totient is φ = 940004256.

The previous prime is 940004213. The next prime is 940004269. The reversal of 940004257 is 752400049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 833996641 + 106007616 = 28879^2 + 10296^2 .

It is a cyclic number.

It is not a de Polignac number, because 940004257 - 2¹⁵ = 939971489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (940004297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470002128 + 470002129.

It is an arithmetic number, because the mean of its divisors is an integer number (470002129).

Almost surely, 2^940004257 is an apocalyptic number.

It is an amenable number.

940004257 is a deficient number, since it is larger than the sum of its proper divisors (1).

940004257 is an equidigital number, since it uses as much as digits as its factorization.

940004257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 940004257 is about 30659.4888574484. The cubic root of 940004257 is about 979.5875874715.

The spelling of 940004257 in words is "nine hundred forty million, four thousand, two hundred fifty-seven".