83829961 has 4 divisors (see below), whose sum is σ = 83883924. Its totient is φ = 83776000.

The previous prime is 83829959. The next prime is 83829971. The reversal of 83829961 is 16992838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16992838 = 2 ⋅8496419.

It can be written as a sum of positive squares in 2 ways, for example, as 50410000 + 33419961 = 7100^2 + 5781^2 .

It is a cyclic number.

It is not a de Polignac number, because 83829961 - 2¹ = 83829959 is a prime.

It is a super-2 number, since 2×83829961² = 14054924722523042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83829971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24580 + ... + 27781.

It is an arithmetic number, because the mean of its divisors is an integer number (20970981).

Almost surely, 2^83829961 is an apocalyptic number.

It is an amenable number.

83829961 is a deficient number, since it is larger than the sum of its proper divisors (53963).

83829961 is a wasteful number, since it uses less digits than its factorization.

83829961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962.

The product of its digits is 186624, while the sum is 46.

The square root of 83829961 is about 9155.8703027074. The cubic root of 83829961 is about 437.6562028357.

The spelling of 83829961 in words is "eighty-three million, eight hundred twenty-nine thousand, nine hundred sixty-one".