84709994 has 4 divisors (see below), whose sum is σ = 127064994. Its totient is φ = 42354996.

The previous prime is 84709973. The next prime is 84710069. The reversal of 84709994 is 49990748.

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

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 13053769 = 8465^2 + 3613^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21177497 + ... + 21177500.

Almost surely, 2^84709994 is an apocalyptic number.

84709994 is a deficient number, since it is larger than the sum of its proper divisors (42355000).

84709994 is a wasteful number, since it uses less digits than its factorization.

84709994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42354999.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 84709994 is about 9203.8032356195. The cubic root of 84709994 is about 439.1823554932.

The spelling of 84709994 in words is "eighty-four million, seven hundred nine thousand, nine hundred ninety-four".