84210969 has 4 divisors (see below), whose sum is σ = 112281296. Its totient is φ = 56140644.

The previous prime is 84210967. The next prime is 84210991. The reversal of 84210969 is 96901248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 84210969 - 2¹ = 84210967 is a prime.

It is a super-2 number, since 2×84210969² = 14182974599837922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84210961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14035159 + ... + 14035164.

It is an arithmetic number, because the mean of its divisors is an integer number (28070324).

Almost surely, 2^84210969 is an apocalyptic number.

It is an amenable number.

84210969 is a deficient number, since it is larger than the sum of its proper divisors (28070327).

84210969 is a wasteful number, since it uses less digits than its factorization.

84210969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28070326.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 84210969 is about 9176.6534749875. The cubic root of 84210969 is about 438.3182514276.

It can be divided in two parts, 842 and 10969, that added together give a palindrome (11811).

The spelling of 84210969 in words is "eighty-four million, two hundred ten thousand, nine hundred sixty-nine".