83961379 has 2 divisors, whose sum is σ = 83961380. Its totient is φ = 83961378.

The previous prime is 83961343. The next prime is 83961391. The reversal of 83961379 is 97316938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83961379 - 2¹³ = 83953187 is a prime.

It is not a weakly prime, because it can be changed into another prime (83961679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41980689 + 41980690.

It is an arithmetic number, because the mean of its divisors is an integer number (41980690).

Almost surely, 2^83961379 is an apocalyptic number.

83961379 is a deficient number, since it is larger than the sum of its proper divisors (1).

83961379 is an equidigital number, since it uses as much as digits as its factorization.

83961379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 83961379 is about 9163.0441993914. The cubic root of 83961379 is about 437.8847840929.

The spelling of 83961379 in words is "eighty-three million, nine hundred sixty-one thousand, three hundred seventy-nine".