84339391 has 8 divisors (see below), whose sum is σ = 86881680. Its totient is φ = 81811008.

The previous prime is 84339361. The next prime is 84339401. The reversal of 84339391 is 19393348.

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

It is a cyclic number.

It is not a de Polignac number, because 84339391 - 2¹³ = 84331199 is a prime.

It is a super-2 number, since 2×84339391² = 14226265748501762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84339331) 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, 9555 + ... + 16123.

It is an arithmetic number, because the mean of its divisors is an integer number (10860210).

Almost surely, 2^84339391 is an apocalyptic number.

84339391 is a deficient number, since it is larger than the sum of its proper divisors (2542289).

84339391 is a wasteful number, since it uses less digits than its factorization.

84339391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953.

The product of its digits is 69984, while the sum is 40.

The square root of 84339391 is about 9183.6480224364. The cubic root of 84339391 is about 438.5409505105.

The spelling of 84339391 in words is "eighty-four million, three hundred thirty-nine thousand, three hundred ninety-one".