84131907 has 8 divisors (see below), whose sum is σ = 117053184. Its totient is φ = 53649288.

The previous prime is 84131897. The next prime is 84131909. The reversal of 84131907 is 70913148.

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

It is not a de Polignac number, because 84131907 - 2¹⁸ = 83869763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84131909) 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, 609583 + ... + 609720.

It is an arithmetic number, because the mean of its divisors is an integer number (14631648).

Almost surely, 2^84131907 is an apocalyptic number.

84131907 is a deficient number, since it is larger than the sum of its proper divisors (32921277).

84131907 is a wasteful number, since it uses less digits than its factorization.

84131907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219329.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 84131907 is about 9172.3446838854. The cubic root of 84131907 is about 438.1810358574.

The spelling of 84131907 in words is "eighty-four million, one hundred thirty-one thousand, nine hundred seven".