83921549 has 8 divisors (see below), whose sum is σ = 88627392. Its totient is φ = 79303840.

The previous prime is 83921533. The next prime is 83921561. The reversal of 83921549 is 94512938.

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

It is a cyclic number.

It is not a de Polignac number, because 83921549 - 2⁴ = 83921533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83923549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20072 + ... + 23889.

It is an arithmetic number, because the mean of its divisors is an integer number (11078424).

Almost surely, 2^83921549 is an apocalyptic number.

It is an amenable number.

83921549 is a deficient number, since it is larger than the sum of its proper divisors (4705843).

83921549 is a wasteful number, since it uses less digits than its factorization.

83921549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44067.

The product of its digits is 77760, while the sum is 41.

The square root of 83921549 is about 9160.8705372361. The cubic root of 83921549 is about 437.8155311825.

The spelling of 83921549 in words is "eighty-three million, nine hundred twenty-one thousand, five hundred forty-nine".