949930821 has 40 divisors (see below), whose sum is σ = 1707126080. Its totient is φ = 514242432.

The previous prime is 949930801. The next prime is 949930837. The reversal of 949930821 is 128039949.

It is not a de Polignac number, because 949930821 - 2¹⁴ = 949914437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949930801) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33316 + ... + 54861.

It is an arithmetic number, because the mean of its divisors is an integer number (42678152).

Almost surely, 2^949930821 is an apocalyptic number.

It is an amenable number.

949930821 is a deficient number, since it is larger than the sum of its proper divisors (757195259).

949930821 is a wasteful number, since it uses less digits than its factorization.

949930821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88215 (or 88206 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 949930821 is about 30820.9477628447. The cubic root of 949930821 is about 983.0237100709.

The spelling of 949930821 in words is "nine hundred forty-nine million, nine hundred thirty thousand, eight hundred twenty-one".