84147723 has 24 divisors (see below), whose sum is σ = 132992496. Its totient is φ = 50846400.

The previous prime is 84147697. The next prime is 84147737. The reversal of 84147723 is 32774148.

It is a happy number.

It is not a de Polignac number, because 84147723 - 2⁵ = 84147691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84147743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38233 + ... + 40373.

It is an arithmetic number, because the mean of its divisors is an integer number (5541354).

Almost surely, 2^84147723 is an apocalyptic number.

84147723 is a deficient number, since it is larger than the sum of its proper divisors (48844773).

84147723 is a wasteful number, since it uses less digits than its factorization.

84147723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555 (or 2552 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 84147723 is about 9173.2068002417. The cubic root of 84147723 is about 438.2084920955.

The spelling of 84147723 in words is "eighty-four million, one hundred forty-seven thousand, seven hundred twenty-three".