83967967 has 2 divisors, whose sum is σ = 83967968. Its totient is φ = 83967966.

The previous prime is 83967943. The next prime is 83967997. The reversal of 83967967 is 76976938.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83967967 is a prime.

It is a super-2 number, since 2×83967967² = 14101238964226178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83967997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41983983 + 41983984.

It is an arithmetic number, because the mean of its divisors is an integer number (41983984).

Almost surely, 2^83967967 is an apocalyptic number.

83967967 is a deficient number, since it is larger than the sum of its proper divisors (1).

83967967 is an equidigital number, since it uses as much as digits as its factorization.

83967967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The square root of 83967967 is about 9163.4036798561. The cubic root of 83967967 is about 437.8962366185.

The spelling of 83967967 in words is "eighty-three million, nine hundred sixty-seven thousand, nine hundred sixty-seven".