84447429 has 8 divisors (see below), whose sum is σ = 122832672. Its totient is φ = 51180240.

The previous prime is 84447427. The next prime is 84447443. The reversal of 84447429 is 92474448.

It is a happy number.

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

It is not a de Polignac number, because 84447429 - 2¹ = 84447427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84447427) 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, 1279474 + ... + 1279539.

It is an arithmetic number, because the mean of its divisors is an integer number (15354084).

Almost surely, 2^84447429 is an apocalyptic number.

It is an amenable number.

84447429 is a deficient number, since it is larger than the sum of its proper divisors (38385243).

84447429 is a wasteful number, since it uses less digits than its factorization.

84447429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559027.

The product of its digits is 258048, while the sum is 42.

The square root of 84447429 is about 9189.5282251049. The cubic root of 84447429 is about 438.7281262786.

The spelling of 84447429 in words is "eighty-four million, four hundred forty-seven thousand, four hundred twenty-nine".