84947455 has 4 divisors (see below), whose sum is σ = 101936952. Its totient is φ = 67957960.

The previous prime is 84947431. The next prime is 84947477. The reversal of 84947455 is 55474948.

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

It is not a de Polignac number, because 84947455 - 2⁷ = 84947327 is a prime.

It is a super-2 number, since 2×84947455² = 14432140221954050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8494741 + ... + 8494750.

It is an arithmetic number, because the mean of its divisors is an integer number (25484238).

Almost surely, 2^84947455 is an apocalyptic number.

84947455 is a deficient number, since it is larger than the sum of its proper divisors (16989497).

84947455 is a wasteful number, since it uses less digits than its factorization.

84947455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989496.

The product of its digits is 806400, while the sum is 46.

The square root of 84947455 is about 9216.6943640331. The cubic root of 84947455 is about 439.5923479854.

The spelling of 84947455 in words is "eighty-four million, nine hundred forty-seven thousand, four hundred fifty-five".