84079747 has 4 divisors (see below), whose sum is σ = 85092840. Its totient is φ = 83066656.

The previous prime is 84079741. The next prime is 84079753. The reversal of 84079747 is 74797048.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (84079741) and next prime (84079753).

It is a cyclic number.

It is not a de Polignac number, because 84079747 - 2²³ = 75691139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84079697 and 84079706.

It is not an unprimeable number, because it can be changed into a prime (84079741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506422 + ... + 506587.

It is an arithmetic number, because the mean of its divisors is an integer number (21273210).

Almost surely, 2^84079747 is an apocalyptic number.

84079747 is a deficient number, since it is larger than the sum of its proper divisors (1013093).

84079747 is a wasteful number, since it uses less digits than its factorization.

84079747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013092.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 84079747 is about 9169.5009133540. The cubic root of 84079747 is about 438.0904628172.

The spelling of 84079747 in words is "eighty-four million, seventy-nine thousand, seven hundred forty-seven".