84191497 has 8 divisors (see below), whose sum is σ = 96001416. Its totient is φ = 73143552.

The previous prime is 84191483. The next prime is 84191533. The reversal of 84191497 is 79419148.

It can be written as a sum of positive squares in 4 ways, for example, as 633616 + 83557881 = 796^2 + 9141^2 .

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 84191497 - 2⁷ = 84191369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84191417) 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, 190258 + ... + 190699.

It is an arithmetic number, because the mean of its divisors is an integer number (12000177).

Almost surely, 2^84191497 is an apocalyptic number.

It is an amenable number.

84191497 is a deficient number, since it is larger than the sum of its proper divisors (11809919).

84191497 is a wasteful number, since it uses less digits than its factorization.

84191497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380987.

The product of its digits is 72576, while the sum is 43.

The square root of 84191497 is about 9175.5924604355. The cubic root of 84191497 is about 438.2844648912.

The spelling of 84191497 in words is "eighty-four million, one hundred ninety-one thousand, four hundred ninety-seven".