83140919 has 4 divisors (see below), whose sum is σ = 83283144. Its totient is φ = 82998696.

The previous prime is 83140909. The next prime is 83140927. The reversal of 83140919 is 91904138.

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

It is a cyclic number.

It is not a de Polignac number, because 83140919 - 2⁸ = 83140663 is a prime.

It is a super-2 number, since 2×83140919² = 13824824824329122, 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 (83140909) 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, 70232 + ... + 71405.

It is an arithmetic number, because the mean of its divisors is an integer number (20820786).

Almost surely, 2^83140919 is an apocalyptic number.

83140919 is a deficient number, since it is larger than the sum of its proper divisors (142225).

83140919 is a wasteful number, since it uses less digits than its factorization.

83140919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142224.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 83140919 is about 9118.1642340989. The cubic root of 83140919 is about 436.4537944878.

The spelling of 83140919 in words is "eighty-three million, one hundred forty thousand, nine hundred nineteen".