84480981 has 8 divisors (see below), whose sum is σ = 121306080. Its totient is φ = 51988272.

The previous prime is 84480971. The next prime is 84480989. The reversal of 84480981 is 18908448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84480981 - 2⁹ = 84480469 is a prime.

It is a super-2 number, since 2×84480981² = 14274072301444722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84480989) 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, 1083051 + ... + 1083128.

It is an arithmetic number, because the mean of its divisors is an integer number (15163260).

Almost surely, 2^84480981 is an apocalyptic number.

It is an amenable number.

84480981 is a deficient number, since it is larger than the sum of its proper divisors (36825099).

84480981 is a wasteful number, since it uses less digits than its factorization.

84480981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166195.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 84480981 is about 9191.3535999873. The cubic root of 84480981 is about 438.7862226082.

The spelling of 84480981 in words is "eighty-four million, four hundred eighty thousand, nine hundred eighty-one".