84729644 has 6 divisors (see below), whose sum is σ = 148276884. Its totient is φ = 42364820.

The previous prime is 84729641. The next prime is 84729647. The reversal of 84729644 is 44692748.

It is an interprime number because it is at equal distance from previous prime (84729641) and next prime (84729647).

It is a super-3 number, since 3×84729644³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 84729595 and 84729604.

It is not an unprimeable number, because it can be changed into a prime (84729641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10591202 + ... + 10591209.

It is an arithmetic number, because the mean of its divisors is an integer number (24712814).

Almost surely, 2^84729644 is an apocalyptic number.

It is an amenable number.

84729644 is a deficient number, since it is larger than the sum of its proper divisors (63547240).

84729644 is a wasteful number, since it uses less digits than its factorization.

84729644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21182415 (or 21182413 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 84729644 is about 9204.8706672066. The cubic root of 84729644 is about 439.2163116051.

The spelling of 84729644 in words is "eighty-four million, seven hundred twenty-nine thousand, six hundred forty-four".