83990210 has 8 divisors (see below), whose sum is σ = 151182396. Its totient is φ = 33596080.

The previous prime is 83990189. The next prime is 83990219. The reversal of 83990210 is 1209938.

It can be written as a sum of positive squares in 2 ways, for example, as 77492809 + 6497401 = 8803^2 + 2549^2 .

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 (83990219) 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, 4199501 + ... + 4199520.

Almost surely, 2^83990210 is an apocalyptic number.

83990210 is a deficient number, since it is larger than the sum of its proper divisors (67192186).

83990210 is a wasteful number, since it uses less digits than its factorization.

83990210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8399028.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 83990210 is about 9164.6172860627. The cubic root of 83990210 is about 437.9348992435.

The spelling of 83990210 in words is "eighty-three million, nine hundred ninety thousand, two hundred ten".