84904071 has 32 divisors (see below), whose sum is σ = 136851456. Its totient is φ = 45792000.

The previous prime is 84904049. The next prime is 84904081. The reversal of 84904071 is 17040948.

It is not a de Polignac number, because 84904071 - 2⁶ = 84904007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84904021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25101 + ... + 28281.

It is an arithmetic number, because the mean of its divisors is an integer number (4276608).

Almost surely, 2^84904071 is an apocalyptic number.

84904071 is a deficient number, since it is larger than the sum of its proper divisors (51947385).

84904071 is a wasteful number, since it uses less digits than its factorization.

84904071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 84904071 is about 9214.3405081427. The cubic root of 84904071 is about 439.5174996688.

It can be divided in two parts, 8490 and 4071, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 84904071 in words is "eighty-four million, nine hundred four thousand, seventy-one".