949828891 has 4 divisors (see below), whose sum is σ = 1036176984. Its totient is φ = 863480800.

The previous prime is 949828889. The next prime is 949828903. The reversal of 949828891 is 198828949.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198828949 = 11 ⋅18075359.

It is a cyclic number.

It is not a de Polignac number, because 949828891 - 2¹ = 949828889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (949828801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43174030 + ... + 43174051.

It is an arithmetic number, because the mean of its divisors is an integer number (259044246).

Almost surely, 2^949828891 is an apocalyptic number.

949828891 is a deficient number, since it is larger than the sum of its proper divisors (86348093).

949828891 is a wasteful number, since it uses less digits than its factorization.

949828891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86348092.

The product of its digits is 2985984, while the sum is 58.

The square root of 949828891 is about 30819.2941353302. The cubic root of 949828891 is about 982.9885484961.

Adding to 949828891 its sum of digits (58), we get a palindrome (949828949).

The spelling of 949828891 in words is "nine hundred forty-nine million, eight hundred twenty-eight thousand, eight hundred ninety-one".