83479591 has 4 divisors (see below), whose sum is σ = 89901112. Its totient is φ = 77058072.

The previous prime is 83479589. The next prime is 83479607. The reversal of 83479591 is 19597438.

It is a happy number.

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

It is not a de Polignac number, because 83479591 - 2¹ = 83479589 is a prime.

It is a super-2 number, since 2×83479591² = 13937684227054562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83479391) 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, 3210741 + ... + 3210766.

It is an arithmetic number, because the mean of its divisors is an integer number (22475278).

Almost surely, 2^83479591 is an apocalyptic number.

83479591 is a deficient number, since it is larger than the sum of its proper divisors (6421521).

83479591 is a wasteful number, since it uses less digits than its factorization.

83479591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421520.

The product of its digits is 272160, while the sum is 46.

The square root of 83479591 is about 9136.7166422080. The cubic root of 83479591 is about 437.0456186984.

The spelling of 83479591 in words is "eighty-three million, four hundred seventy-nine thousand, five hundred ninety-one".