83191144 has 16 divisors (see below), whose sum is σ = 156122820. Its totient is φ = 41558400.

The previous prime is 83191123. The next prime is 83191159. The reversal of 83191144 is 44119138.

It can be written as a sum of positive squares in 2 ways, for example, as 55502500 + 27688644 = 7450^2 + 5262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6412 + ... + 14404.

Almost surely, 2^83191144 is an apocalyptic number.

It is an amenable number.

83191144 is a deficient number, since it is larger than the sum of its proper divisors (72931676).

83191144 is a wasteful number, since it uses less digits than its factorization.

83191144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9300 (or 9296 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 83191144 is about 9120.9179362606. The cubic root of 83191144 is about 436.5416632912.

The spelling of 83191144 in words is "eighty-three million, one hundred ninety-one thousand, one hundred forty-four".