8460391 has 4 divisors (see below), whose sum is σ = 8666784. Its totient is φ = 8254000.

The previous prime is 8460371. The next prime is 8460401. The reversal of 8460391 is 1930648.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8460391 - 2⁹ = 8459879 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 (8460311) 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, 103135 + ... + 103216.

It is an arithmetic number, because the mean of its divisors is an integer number (2166696).

Almost surely, 2^8460391 is an apocalyptic number.

8460391 is a deficient number, since it is larger than the sum of its proper divisors (206393).

8460391 is a wasteful number, since it uses less digits than its factorization.

8460391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206392.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 8460391 is about 2908.6751279577. The cubic root of 8460391 is about 203.7652608791.

The spelling of 8460391 in words is "eight million, four hundred sixty thousand, three hundred ninety-one".