83959657 has 4 divisors (see below), whose sum is σ = 84005460. Its totient is φ = 83913856.

The previous prime is 83959619. The next prime is 83959703. The reversal of 83959657 is 75695938.

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 76457536 + 7502121 = 8744^2 + 2739^2 .

It is a cyclic number.

It is not a de Polignac number, because 83959657 - 2¹¹ = 83957609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83954657) 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, 20032 + ... + 23857.

It is an arithmetic number, because the mean of its divisors is an integer number (21001365).

Almost surely, 2^83959657 is an apocalyptic number.

It is an amenable number.

83959657 is a deficient number, since it is larger than the sum of its proper divisors (45803).

83959657 is a wasteful number, since it uses less digits than its factorization.

83959657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45802.

The product of its digits is 2041200, while the sum is 52.

The square root of 83959657 is about 9162.9502345042. The cubic root of 83959657 is about 437.8817904834.

The spelling of 83959657 in words is "eighty-three million, nine hundred fifty-nine thousand, six hundred fifty-seven".