84972799 has 4 divisors (see below), whose sum is σ = 85019400. Its totient is φ = 84926200.

The previous prime is 84972791. The next prime is 84972809. The reversal of 84972799 is 99727948.

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

It is a cyclic number.

It is not a de Polignac number, because 84972799 - 2³ = 84972791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84972791) 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, 20449 + ... + 24250.

It is an arithmetic number, because the mean of its divisors is an integer number (21254850).

Almost surely, 2^84972799 is an apocalyptic number.

84972799 is a deficient number, since it is larger than the sum of its proper divisors (46601).

84972799 is a wasteful number, since it uses less digits than its factorization.

84972799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46600.

The product of its digits is 2286144, while the sum is 55.

The square root of 84972799 is about 9218.0691579094. The cubic root of 84972799 is about 439.6360609712.

The spelling of 84972799 in words is "eighty-four million, nine hundred seventy-two thousand, seven hundred ninety-nine".