83487893 has 2 divisors, whose sum is σ = 83487894. Its totient is φ = 83487892.

The previous prime is 83487889. The next prime is 83487917. The reversal of 83487893 is 39878438.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62758084 + 20729809 = 7922^2 + 4553^2 .

It is a cyclic number.

It is not a de Polignac number, because 83487893 - 2² = 83487889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83487883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41743946 + 41743947.

It is an arithmetic number, because the mean of its divisors is an integer number (41743947).

Almost surely, 2^83487893 is an apocalyptic number.

It is an amenable number.

83487893 is a deficient number, since it is larger than the sum of its proper divisors (1).

83487893 is an equidigital number, since it uses as much as digits as its factorization.

83487893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 83487893 is about 9137.1709516677. The cubic root of 83487893 is about 437.0601062013.

The spelling of 83487893 in words is "eighty-three million, four hundred eighty-seven thousand, eight hundred ninety-three".