83439802 has 8 divisors (see below), whose sum is σ = 125198676. Its totient is φ = 41706912.

The previous prime is 83439787. The next prime is 83439809. The reversal of 83439802 is 20893438.

It can be written as a sum of positive squares in 2 ways, for example, as 72948681 + 10491121 = 8541^2 + 3239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (83439809) 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, 8038 + ... + 15214.

Almost surely, 2^83439802 is an apocalyptic number.

83439802 is a deficient number, since it is larger than the sum of its proper divisors (41758874).

83439802 is a wasteful number, since it uses less digits than its factorization.

83439802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12992.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 83439802 is about 9134.5389593564. The cubic root of 83439802 is about 436.9761710986.

It can be divided in two parts, 8343 and 9802, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 83439802 in words is "eighty-three million, four hundred thirty-nine thousand, eight hundred two".