83943479 has 2 divisors, whose sum is σ = 83943480. Its totient is φ = 83943478.

The previous prime is 83943469. The next prime is 83943499. The reversal of 83943479 is 97434938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83943479 - 2²⁴ = 67166263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83943469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41971739 + 41971740.

It is an arithmetic number, because the mean of its divisors is an integer number (41971740).

Almost surely, 2^83943479 is an apocalyptic number.

83943479 is a deficient number, since it is larger than the sum of its proper divisors (1).

83943479 is an equidigital number, since it uses as much as digits as its factorization.

83943479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 83943479 is about 9162.0673977002. The cubic root of 83943479 is about 437.8536638532.

The spelling of 83943479 in words is "eighty-three million, nine hundred forty-three thousand, four hundred seventy-nine".