84079729 has 8 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 80850000.

The previous prime is 84079711. The next prime is 84079741. The reversal of 84079729 is 92797048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84079729 - 2¹⁵ = 84046961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84079759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504 + ... + 13054.

It is an arithmetic number, because the mean of its divisors is an integer number (10916640).

Almost surely, 2^84079729 is an apocalyptic number.

It is an amenable number.

84079729 is a deficient number, since it is larger than the sum of its proper divisors (3253391).

84079729 is a wasteful number, since it uses less digits than its factorization.

84079729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11831.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 84079729 is about 9169.4999318392. The cubic root of 84079729 is about 438.0904315547.

The spelling of 84079729 in words is "eighty-four million, seventy-nine thousand, seven hundred twenty-nine".