84345379 has 2 divisors, whose sum is σ = 84345380. Its totient is φ = 84345378.

The previous prime is 84345367. The next prime is 84345413. The reversal of 84345379 is 97354348.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84345379 is a prime.

It is a super-2 number, since 2×84345379² = 14228285917307282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84345319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42172689 + 42172690.

It is an arithmetic number, because the mean of its divisors is an integer number (42172690).

Almost surely, 2^84345379 is an apocalyptic number.

84345379 is a deficient number, since it is larger than the sum of its proper divisors (1).

84345379 is an equidigital number, since it uses as much as digits as its factorization.

84345379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 84345379 is about 9183.9740308866. The cubic root of 84345379 is about 438.5513288997.

The spelling of 84345379 in words is "eighty-four million, three hundred forty-five thousand, three hundred seventy-nine".