84269421 has 12 divisors (see below), whose sum is σ = 121962048. Its totient is φ = 56069064.

The previous prime is 84269359. The next prime is 84269443. The reversal of 84269421 is 12496248.

It is not a de Polignac number, because 84269421 - 2¹⁰ = 84268397 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84269021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4245 + ... + 13658.

It is an arithmetic number, because the mean of its divisors is an integer number (10163504).

Almost surely, 2^84269421 is an apocalyptic number.

It is an amenable number.

84269421 is a deficient number, since it is larger than the sum of its proper divisors (37692627).

84269421 is a wasteful number, since it uses less digits than its factorization.

84269421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18432 (or 18429 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 84269421 is about 9179.8377436641. The cubic root of 84269421 is about 438.4196422288.

The spelling of 84269421 in words is "eighty-four million, two hundred sixty-nine thousand, four hundred twenty-one".