84721927 has 4 divisors (see below), whose sum is σ = 84840480. Its totient is φ = 84603376.

The previous prime is 84721921. The next prime is 84721933. The reversal of 84721927 is 72912748.

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

It is an interprime number because it is at equal distance from previous prime (84721921) and next prime (84721933).

It is a cyclic number.

It is not a de Polignac number, because 84721927 - 2³ = 84721919 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84721927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84721921) 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, 58198 + ... + 59635.

It is an arithmetic number, because the mean of its divisors is an integer number (21210120).

Almost surely, 2^84721927 is an apocalyptic number.

84721927 is a deficient number, since it is larger than the sum of its proper divisors (118553).

84721927 is a wasteful number, since it uses less digits than its factorization.

84721927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118552.

The product of its digits is 56448, while the sum is 40.

The square root of 84721927 is about 9204.4514774103. The cubic root of 84721927 is about 439.2029768971.

The spelling of 84721927 in words is "eighty-four million, seven hundred twenty-one thousand, nine hundred twenty-seven".