84451847236 has 9 divisors (see below), whose sum is σ = 147791749791. Its totient is φ = 42225633012.

The previous prime is 84451847231. The next prime is 84451847279. The reversal of 84451847236 is 63274815448.

The square root of 84451847236 is 290606.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×84451847236² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84451847231) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 508561 + ... + 653863.

Almost surely, 2^84451847236 is an apocalyptic number.

84451847236 is the 290606-th square number.

It is an amenable number.

84451847236 is a deficient number, since it is larger than the sum of its proper divisors (63339902555).

84451847236 is an frugal number, since it uses more digits than its factorization.

84451847236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290610 (or 145305 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 52.

The spelling of 84451847236 in words is "eighty-four billion, four hundred fifty-one million, eight hundred forty-seven thousand, two hundred thirty-six".