8451913 has 4 divisors (see below), whose sum is σ = 8460928. Its totient is φ = 8442900.

The previous prime is 8451899. The next prime is 8451929. The reversal of 8451913 is 3191548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8451913 - 2⁵ = 8451881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8451953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2913 + ... + 5038.

It is an arithmetic number, because the mean of its divisors is an integer number (2115232).

Almost surely, 2^8451913 is an apocalyptic number.

It is an amenable number.

8451913 is a deficient number, since it is larger than the sum of its proper divisors (9015).

8451913 is a wasteful number, since it uses less digits than its factorization.

8451913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014.

The product of its digits is 4320, while the sum is 31.

The square root of 8451913 is about 2907.2173981318. The cubic root of 8451913 is about 203.6971750092.

The spelling of 8451913 in words is "eight million, four hundred fifty-one thousand, nine hundred thirteen".