8451249 has 4 divisors (see below), whose sum is σ = 11268336. Its totient is φ = 5634164.

The previous prime is 8451241. The next prime is 8451259. The reversal of 8451249 is 9421548.

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.

It is a cyclic number.

It is not a de Polignac number, because 8451249 - 2³ = 8451241 is a prime.

8451249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8451241) 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, 1408539 + ... + 1408544.

It is an arithmetic number, because the mean of its divisors is an integer number (2817084).

Almost surely, 2^8451249 is an apocalyptic number.

It is an amenable number.

8451249 is a deficient number, since it is larger than the sum of its proper divisors (2817087).

8451249 is a wasteful number, since it uses less digits than its factorization.

8451249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817086.

The product of its digits is 11520, while the sum is 33.

The square root of 8451249 is about 2907.1031973427. The cubic root of 8451249 is about 203.6918405772.

Subtracting 8451249 from its reverse (9421548), we obtain a cube (970299 = 99³).

The spelling of 8451249 in words is "eight million, four hundred fifty-one thousand, two hundred forty-nine".