84275391 has 8 divisors (see below), whose sum is σ = 115992064. Its totient is φ = 54371160.

The previous prime is 84275369. The next prime is 84275407. The reversal of 84275391 is 19357248.

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

It is not a de Polignac number, because 84275391 - 2⁶ = 84275327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84275351) 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, 453001 + ... + 453186.

It is an arithmetic number, because the mean of its divisors is an integer number (14499008).

Almost surely, 2^84275391 is an apocalyptic number.

84275391 is a deficient number, since it is larger than the sum of its proper divisors (31716673).

84275391 is a wasteful number, since it uses less digits than its factorization.

84275391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906221.

The product of its digits is 60480, while the sum is 39.

The square root of 84275391 is about 9180.1629070513. The cubic root of 84275391 is about 438.4299951478.

It can be divided in two parts, 84275 and 391, that added together give a triangular number (84666 = T₄₁₁).

The spelling of 84275391 in words is "eighty-four million, two hundred seventy-five thousand, three hundred ninety-one".