84929009 has 4 divisors (see below), whose sum is σ = 92649840. Its totient is φ = 77208180.

The previous prime is 84928997. The next prime is 84929011. The reversal of 84929009 is 90092948.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84929009 - 2¹² = 84924913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84929309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3860399 + ... + 3860420.

It is an arithmetic number, because the mean of its divisors is an integer number (23162460).

Almost surely, 2^84929009 is an apocalyptic number.

It is an amenable number.

84929009 is a deficient number, since it is larger than the sum of its proper divisors (7720831).

84929009 is a wasteful number, since it uses less digits than its factorization.

84929009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720830.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 84929009 is about 9215.6936255498. The cubic root of 84929009 is about 439.5605271088.

The spelling of 84929009 in words is "eighty-four million, nine hundred twenty-nine thousand, nine".