83906837 has 4 divisors (see below), whose sum is σ = 95893536. Its totient is φ = 71920140.

The previous prime is 83906833. The next prime is 83906839. The reversal of 83906837 is 73860938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73860938 = 2 ⋅36930469.

It is a cyclic number.

It is not a de Polignac number, because 83906837 - 2² = 83906833 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 (83906833) 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, 5993339 + ... + 5993352.

It is an arithmetic number, because the mean of its divisors is an integer number (23973384).

Almost surely, 2^83906837 is an apocalyptic number.

It is an amenable number.

83906837 is a deficient number, since it is larger than the sum of its proper divisors (11986699).

83906837 is a wasteful number, since it uses less digits than its factorization.

83906837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986698.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 83906837 is about 9160.0675215852. The cubic root of 83906837 is about 437.7899457057.

The spelling of 83906837 in words is "eighty-three million, nine hundred six thousand, eight hundred thirty-seven".