84923421 has 8 divisors (see below), whose sum is σ = 123525024. Its totient is φ = 51468720.

The previous prime is 84923401. The next prime is 84923453. The reversal of 84923421 is 12432948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84923421 - 2¹⁸ = 84661277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2573437 = 84923421 / (8 + 4 + 9 + 2 + 3 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84923401) 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, 1286686 + ... + 1286751.

It is an arithmetic number, because the mean of its divisors is an integer number (15440628).

Almost surely, 2^84923421 is an apocalyptic number.

It is an amenable number.

84923421 is a deficient number, since it is larger than the sum of its proper divisors (38601603).

84923421 is a wasteful number, since it uses less digits than its factorization.

84923421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573451.

The product of its digits is 13824, while the sum is 33.

The square root of 84923421 is about 9215.3904420811. The cubic root of 84923421 is about 439.5508864370.

The spelling of 84923421 in words is "eighty-four million, nine hundred twenty-three thousand, four hundred twenty-one".