84669747 has 4 divisors (see below), whose sum is σ = 112893000. Its totient is φ = 56446496.

The previous prime is 84669743. The next prime is 84669787. The reversal of 84669747 is 74796648.

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

It is a cyclic number.

It is not a de Polignac number, because 84669747 - 2² = 84669743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84669747.

It is not an unprimeable number, because it can be changed into a prime (84669743) 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, 14111622 + ... + 14111627.

It is an arithmetic number, because the mean of its divisors is an integer number (28223250).

Almost surely, 2^84669747 is an apocalyptic number.

84669747 is a deficient number, since it is larger than the sum of its proper divisors (28223253).

84669747 is a wasteful number, since it uses less digits than its factorization.

84669747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28223252.

The product of its digits is 2032128, while the sum is 51.

The square root of 84669747 is about 9201.6165427603. The cubic root of 84669747 is about 439.1127904140.

The spelling of 84669747 in words is "eighty-four million, six hundred sixty-nine thousand, seven hundred forty-seven".