83747893 has 2 divisors, whose sum is σ = 83747894. Its totient is φ = 83747892.

The previous prime is 83747869. The next prime is 83747927. The reversal of 83747893 is 39874738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61826769 + 21921124 = 7863^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 83747893 - 2⁹ = 83747381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83747813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41873946 + 41873947.

It is an arithmetic number, because the mean of its divisors is an integer number (41873947).

Almost surely, 2^83747893 is an apocalyptic number.

It is an amenable number.

83747893 is a deficient number, since it is larger than the sum of its proper divisors (1).

83747893 is an equidigital number, since it uses as much as digits as its factorization.

83747893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 83747893 is about 9151.3874904301. The cubic root of 83747893 is about 437.5133370628.

The spelling of 83747893 in words is "eighty-three million, seven hundred forty-seven thousand, eight hundred ninety-three".