84891406 has 16 divisors (see below), whose sum is σ = 128771280. Its totient is φ = 41970240.

The previous prime is 84891397. The next prime is 84891407. The reversal of 84891406 is 60419848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84891407) 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, 119380 + ... + 120088.

It is an arithmetic number, because the mean of its divisors is an integer number (8048205).

Almost surely, 2^84891406 is an apocalyptic number.

84891406 is a deficient number, since it is larger than the sum of its proper divisors (43879874).

84891406 is a wasteful number, since it uses less digits than its factorization.

84891406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 84891406 is about 9213.6532385368. The cubic root of 84891406 is about 439.4956445490.

The spelling of 84891406 in words is "eighty-four million, eight hundred ninety-one thousand, four hundred six".