83887091 has 2 divisors, whose sum is σ = 83887092. Its totient is φ = 83887090.

The previous prime is 83887079. The next prime is 83887093. The reversal of 83887091 is 19078838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83887091 - 2²⁶ = 16778227 is a prime.

Together with 83887093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83887093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41943545 + 41943546.

It is an arithmetic number, because the mean of its divisors is an integer number (41943546).

Almost surely, 2^83887091 is an apocalyptic number.

83887091 is a deficient number, since it is larger than the sum of its proper divisors (1).

83887091 is an equidigital number, since it uses as much as digits as its factorization.

83887091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 83887091 is about 9158.9896276827. The cubic root of 83887091 is about 437.7556009539.

The spelling of 83887091 in words is "eighty-three million, eight hundred eighty-seven thousand, ninety-one".