84400994 has 16 divisors (see below), whose sum is σ = 128839032. Its totient is φ = 41459328.

The previous prime is 84400973. The next prime is 84400999. The reversal of 84400994 is 49900448.

It can be written as a sum of positive squares in 4 ways, for example, as 79834225 + 4566769 = 8935^2 + 2137^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84400999) 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, 41792 + ... + 43764.

Almost surely, 2^84400994 is an apocalyptic number.

84400994 is a deficient number, since it is larger than the sum of its proper divisors (44438038).

84400994 is a wasteful number, since it uses less digits than its factorization.

84400994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 84400994 is about 9187.0013606182. The cubic root of 84400994 is about 438.6476972434.

The spelling of 84400994 in words is "eighty-four million, four hundred thousand, nine hundred ninety-four".