84729631 has 8 divisors (see below), whose sum is σ = 101044224. Its totient is φ = 69467640.

The previous prime is 84729629. The next prime is 84729641. The reversal of 84729631 is 13692748.

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 84729631 - 2¹ = 84729629 is a prime.

It is a super-2 number, since 2×84729631² = 14358220738792322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84729611) 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, 262975 + ... + 263296.

It is an arithmetic number, because the mean of its divisors is an integer number (12630528).

Almost surely, 2^84729631 is an apocalyptic number.

84729631 is a deficient number, since it is larger than the sum of its proper divisors (16314593).

84729631 is a wasteful number, since it uses less digits than its factorization.

84729631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526301.

The product of its digits is 72576, while the sum is 40.

The square root of 84729631 is about 9204.8699610587. The cubic root of 84729631 is about 439.2162891422.

The spelling of 84729631 in words is "eighty-four million, seven hundred twenty-nine thousand, six hundred thirty-one".