83209995 has 48 divisors (see below), whose sum is σ = 159056352. Its totient is φ = 39905280.

The previous prime is 83209993. The next prime is 83210041. The reversal of 83209995 is 59990238.

It is not a de Polignac number, because 83209995 - 2¹ = 83209993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 83209995.

It is not an unprimeable number, because it can be changed into a prime (83209993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47149 + ... + 48881.

It is an arithmetic number, because the mean of its divisors is an integer number (3313674).

Almost surely, 2^83209995 is an apocalyptic number.

83209995 is a deficient number, since it is larger than the sum of its proper divisors (75846357).

83209995 is a wasteful number, since it uses less digits than its factorization.

83209995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 83209995 is about 9121.9512715208. The cubic root of 83209995 is about 436.5746340499.

The spelling of 83209995 in words is "eighty-three million, two hundred nine thousand, nine hundred ninety-five".