940355521 has 12 divisors (see below), whose sum is σ = 1114525332. Its totient is φ = 790808928.

The previous prime is 940355503. The next prime is 940355531. The reversal of 940355521 is 125553049.

It can be written as a sum of positive squares in 2 ways, for example, as 804516496 + 135839025 = 28364^2 + 11655^2 .

It is not a de Polignac number, because 940355521 - 2¹⁷ = 940224449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (940355531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178450 + ... + 183643.

It is an arithmetic number, because the mean of its divisors is an integer number (92877111).

Almost surely, 2^940355521 is an apocalyptic number.

It is an amenable number.

940355521 is a deficient number, since it is larger than the sum of its proper divisors (174169811).

940355521 is a wasteful number, since it uses less digits than its factorization.

940355521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362160 (or 362153 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 940355521 is about 30665.2167936247. The cubic root of 940355521 is about 979.7095908206.

The spelling of 940355521 in words is "nine hundred forty million, three hundred fifty-five thousand, five hundred twenty-one".