83906919 has 6 divisors (see below), whose sum is σ = 121198896. Its totient is φ = 55937940.

The previous prime is 83906839. The next prime is 83906959. The reversal of 83906919 is 91960938.

It is not a de Polignac number, because 83906919 - 2¹² = 83902823 is a prime.

It is a super-2 number, since 2×83906919² = 14080742112145122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83906959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4661487 + ... + 4661504.

It is an arithmetic number, because the mean of its divisors is an integer number (20199816).

Almost surely, 2^83906919 is an apocalyptic number.

83906919 is a deficient number, since it is larger than the sum of its proper divisors (37291977).

83906919 is a wasteful number, since it uses less digits than its factorization.

83906919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322997 (or 9322994 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 83906919 is about 9160.0719975336. The cubic root of 83906919 is about 437.7900883193.

The spelling of 83906919 in words is "eighty-three million, nine hundred six thousand, nine hundred nineteen".