7870249 has 4 divisors (see below), whose sum is σ = 8124160. Its totient is φ = 7616340.

The previous prime is 7870243. The next prime is 7870277. The reversal of 7870249 is 9420787.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 9420787 = 283 ⋅33289.

It is a cyclic number.

It is not a de Polignac number, because 7870249 - 2³ = 7870241 is a prime.

It is a d-powerful number, because it can be written as 7 + 8⁷ + 7⁸ + 0 + 2¹³ + 4² + 9² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7870241) 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, 126909 + ... + 126970.

It is an arithmetic number, because the mean of its divisors is an integer number (2031040).

Almost surely, 2^7870249 is an apocalyptic number.

It is an amenable number.

7870249 is a deficient number, since it is larger than the sum of its proper divisors (253911).

7870249 is a wasteful number, since it uses less digits than its factorization.

7870249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253910.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 7870249 is about 2805.3964069272. The cubic root of 7870249 is about 198.9128428207.

The spelling of 7870249 in words is "seven million, eight hundred seventy thousand, two hundred forty-nine".