83153449 has 4 divisors (see below), whose sum is σ = 84722436. Its totient is φ = 81584464.

The previous prime is 83153419. The next prime is 83153507. The reversal of 83153449 is 94435138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72131049 + 11022400 = 8493^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 83153449 - 2⁵ = 83153417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83153419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784414 + ... + 784519.

It is an arithmetic number, because the mean of its divisors is an integer number (21180609).

Almost surely, 2^83153449 is an apocalyptic number.

It is an amenable number.

83153449 is a deficient number, since it is larger than the sum of its proper divisors (1568987).

83153449 is a wasteful number, since it uses less digits than its factorization.

83153449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568986.

The product of its digits is 51840, while the sum is 37.

The square root of 83153449 is about 9118.8512982722. The cubic root of 83153449 is about 436.4757190764.

The spelling of 83153449 in words is "eighty-three million, one hundred fifty-three thousand, four hundred forty-nine".