83969971 has 2 divisors, whose sum is σ = 83969972. Its totient is φ = 83969970.

The previous prime is 83969959. The next prime is 83970017. The reversal of 83969971 is 17996938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83969971 - 2⁷ = 83969843 is a prime.

It is not a weakly prime, because it can be changed into another prime (83969371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41984985 + 41984986.

It is an arithmetic number, because the mean of its divisors is an integer number (41984986).

Almost surely, 2^83969971 is an apocalyptic number.

83969971 is a deficient number, since it is larger than the sum of its proper divisors (1).

83969971 is an equidigital number, since it uses as much as digits as its factorization.

83969971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 83969971 is about 9163.5130272183. The cubic root of 83969971 is about 437.8997202369.

The spelling of 83969971 in words is "eighty-three million, nine hundred sixty-nine thousand, nine hundred seventy-one".